Archive of Our Own

13 year old Jeno and 20 year old Mark, they bunk together which subsequently means that they share a bathroom, and every night Mark can hear what sounds like pained noises coming from the bathroom. Every night, without fail, and every time he checks it's always Jeno who's missing. At first they weren't close enough for Mark to really ask what's going on and if Jeno’s okay, but after about the second week of rooming together Mark finally decides he should be a good hyung and ask if Jeno is okay.

So he approaches the door and knocks softly "Jeno? Is everything alright?"

There's frantic banging and crashing sounds in the bathroom that make Mark step back, staring at the door in confusion. 

"H-hey kiddo? You okay in ther—"

"Fine!! I'm fine! Everything's Fine!"

It's peculiar, sure, but Mark leaves him alone that night seeing as everything was 'fine'. 

The sounds don't persist for about a week and a half until he's woken up by another very pained groan from the bathroom and — wouldn't you know it— Jeno is gone again.

This time Mark doesn't knock. Instead he creeps out of the bottom bunk and makes his way over to the bathroom, placing his ear against the wall so as not to jostle the actual door and alarm the boy. 

At first he's not sure what he's hearing. Bath water, maybe? Or water in the sink? Maybe Jeno’s been crying so he's sniffling and rubbing his eyes which is where that wet sound is coming from? 

Wrong, wrong, and oh so wrong.

It hits him when he hears the familiar sound of a hitched squeal stuck in Jenos throat along with staggered hushed moans. And that sloshing sound isn't necessarily sloshing; it's the sweet sound of Jeno trying his best to push his fingers into just the right spot. 

Mark's heart plummets in his chest right out his ass. His fight or flight kicks in but he does neither as he's too stunned by the way Jeno sounds for him to move.

His ear stays plastered to the wall. His eyes fluttering close when he hears another cry come from the young boy and it's almost like he's there. 

He wishes he was; standing behind him adjusting his hands and his legs so Jeno could find that perfect little spot, little bundle of nerves so he can really feel and achieve the perfect orgasm. 

"Oh, fuck~ " Mark whispers involuntarily as his hand already found its way into his briefs while he fists lazily at his cock. It didn't take long for him to get rock solid under the idea of being able to guide his little shadow. 

Jeno would be so pretty too, his natural pout and those ridiculously shiny eyes of his, and what would Mark's name sound like rolling from the back of Jeno's throat around a heady moan?

Suddenly the two of them are panting in tandem, almost like Jeno knows what's going on. For Jenos safety and Mark's sanity; he hopes the little one doesn't.

But would it be so bad? Jeno catching Mark and knowing that he knows. Maybe Jeno would allow Mark to help, maybe he would let Mark get away with more than just that. 

Just thinking about how much larger Mark is than Jeno, his hand is the size of Jeno's stomach already. He could imagine the kind of outlines he would see if he were to bury himself deep in Jeno, all the way to the hilt, letting the little one writhe and sob impaled on his dick until he relaxes and gets used to it. 

The breathing gets heavier from the both of them, Mark speeds up jerking rather furiously now thinking of all the ways he could have his little Jeno all to himself.

The flashes of imagery are intense. what Jeno looks like when he wakes up in the morning, frazzled and shirtless with his shorts hanging onto his hips for dear life. The tiny rasp to his still high prepubescent voice when he says goodmorning to Mark, and would that rasp come out when Mark is fucking into Jeno so hard the bed frame shakes? Or would it reach a higher octave as he screams for Mark to slow down. 

It hits like a fucking boulder, so hard that Mark has to bite into his own arm as not to scream at the top of his lungs and buckle his knees so he doesnt fall to the ground as his orgasm crashes and cum runs over his hand into his underwear.

He holds his breath realizing just how loud he had gotten and waits for the blood pounding in his ears to relax so he can hear. Still pressed against the wall he waits for a sound; but it's deafeningly silent. 

Theres no way Jeno didnt hear him he had to have heard him he was being way too fucking loud stupid fucking idiot dumbass okay don’t panic just get back in bed yeah that’ll be fine just go back to bed nothing ever happened.

The walk to his bed is difficult on bambi legs but he makes it, tucking himself under the covers and gets as cozy as one can in their cum stained underwear. 

He waits for a bit, listening for any sign of movement or even an orgasm from the other. 

Waiting doesn't last long before Mark wakes up the next morning, having to peel his body from the mattress as he feels like he's ten thousand pounds. 

When he gets up the bathroom is empty but there's still no Jeno in bed. A little odd since Mark always has to wake Jeno up, of course this sparks worry but he tries to not let it get to him. 

Instead he goes into the bathroom and gets cleaned up from last nights .... endeavors, and tries to wash away the memory of literally all of it. 

He lets the hot water run over him to try and rinse off any inkling of Jeno from his mind and body. Mark washes the shampoo from his hair then turns to grab the body wash off the ledge of the shower and what the fuck is that . 

He shouldn’t touch it, he shouldn’t pick that up he shouldn’t be holding this he shouldn’t be thinking about where Jeno has placed this very adorable very tiny purple butt plug, he shouldn’t he shouldn’t he FUCK but he is!

The panic is very real, it wells up in him like lava yet apparently his dick isn't the least bit worried about that.

All he has to do is stay calm, put it right back where it was and then—

"Mark hyung?" There's a knock on the door, and a very nervous sounding kiddo just outside. 

Mark doesn't answer and there's another knock, "H-hey Mark??" 

Jeno sounds frantic now and Mark knows exactly why. 

"Hey kid! What's up?" 

"Are you uh,,, ta-taking a shower?" 

God hes so naive and stupid and cute and a c h i l d . 

"That's why the waters on!" Mark laughs the most Normal™ Laugh he can, trying so hard to signify that everything is fine; when it's far from it. 

"Well.. o-okay. Cool." 

Jeno's voice gets softer and seemingly farther away from the door. Mark finally releases the breath he's been holding as well as his iron grip from the plug.

The rest of his shower is just stuck in perpetual anxiety as he tries to place the plug down right where he found it, finish up as fast as he possibly can; doesn't even bother with his rather painful erection as he leaves the bathroom to try and get dressed for the day. 

Needless to say, the schedules are Awkward. Jeno doesn't make eye contact, especially not after he frantically ran into the bathroom once Mark left the bedroom, then once more frantically sprinted past Mark to climb right into the back seat of the car avoiding all eye contact with the elder. 

Mark isn't hurt by it though, he knows what it's like being that age and figuring it all out. It's a bit humiliating when someone knows your secret, especially when you don't even understand the secret yourself. It's tricky growing up with these kinds of urges, which is why Mark decides he should tell Jeno the truth. 

Well— okay not the whole truth, but... part of it anyway

He lets a couple of days pass so Jeno can at least relax and get back into the swing of things. Eventually the two are hanging out in the living room again with everyone else almost like normal. 

Luckily Jeno isn't too phased by Mark still playing around, picking him up in a wrestler move then carrying him into the bedroom, all giggles and smiles before Mark plunges Jeno into his own bed squealing with joy and laughing like normal. 

Boy does Mark love that smile, and he's happy to see it again. 

Once he and Jeno finally calm down after some play fighting with pillows and blankets and stuffed animals, Mark decides it's probably the best and maybe the only time he has to tell Jeno. 

"Hey kiddo, c'mere." He says gently still with a smile. 

Mark swears he visibly watched the color leave Jenos face. Whether it's just the normal 'oh shit what did i do' feeling or he knows exactly where this is about to go, Mark can only hope it won't destroy the little one when he knows. 

Jeno moves closer and sits in front of Mark on the bed, and well, there's never any real good place to start these kinds of things. 

"Look so uhm... I know, you're not really around your parents or even friends your own age but uh..." he pauses, where the fuck is he even supposed to go with this?

"I- I could, be a friend, ya know? I was your age once and I know just how tight or or TOUGH rather, how tough life can get and ... what I’m trying to say is that there are things you’ll learn about yourself, or maybe you’re trying to learn about yourself—" Going real fucking smooth there, Mark. 

"Hyung." Jeno stops him thank god , "I know you found my... thing." 

"The plug?" 

Jeno quickly freaks the fuck out letting out a small scream and hitting Mark with a pillow right to the face; poor choice of words, noted . 

Mark chuckles and grabs one of Jenos hands "Hey, it's all good, you can call it what it is. Or we could just call it 'the thing' if that's more comfortable." 

Jeno can't bear to make eye contact at the moment but he nods anyway. 

"Look, I discovered the same things when I was your age and it was... scary. Ya know I kinda wish I had someone along to help me, guide me in the right direction and all. "

And seemingly that gets Jeno's attention as he turns to Mark, glassy eyed and beet red.

"Y-you do?" he stutters 

"Yeah! I would’ve made a lot fewer mistakes that's for sure. So I guess what I was trying to say with all of that is... I’m here, if you need my help, all you gotta do is ask." 

Its heart melting and calming to see the way Jeno smiles at the offer, and he wastes no time in jumping in to hug his Mark hyung as tight as possible. 

When Mark goes to let go Jeno doesn't detach, instead he moves in closer to straddle one of Mark's thighs and sits there before whispering "Just... a minute longer?" 

It’s innocent and nearly makes Mark cry. He sniffles it back and instead hugs tighter, nodding an "of course" before they sit there for a few minutes longer. 

Jeno was particularly clingy that night, asking Mark to sleep in the bed with him and of course he wasn't going to shoot that down.

It's not even two days that go by before Mark is sound asleep in his bed, only to be woken up by the all too familiar sounds of Jeno struggling with his stubby fingers, trying to reach right where he wants but just falling short of the mark.

Mark rolls over and sighs, he really feels for the poor kid. It's not easy having to wait for your body to catch up in order for you to achieve exactly what you're wanting. 

He lays and listens for a little bit, somewhere around ten minutes as he tries to decide if he should step in or not. What tips could he even give Jeno? 

First of all he prays the kid is using lube. If not well, he has some of that. Maybe he could lend Jeno a decent toy? Something with reach, not too much girth, a better starter than whatever that tiny little pebble of a plug was. 

It's a tough decision. He doesn't want to intrude but he fears if he never does, Jeno might be too skittish to approach him .

Mark stands to his feet and grabs a pair of pants, adjusting to the best of his ability to hide his rather painful problem before sauntering over to the bathroom door. 

When he knocks this time there isn't a huge display of fear. Instead when Mark calls his name he just answers with a small "Yes?"

"Do you uh... want some guidance? At all?"

It's silent for a moment, there's slight rustling and movement behind the door. 

"L-like what?" 

Mark leans up against the door frame crossing his arms and getting cozy, "Well for starters I just wanna ask, are you using lubrication?"

Each answer takes a few seconds, he can only imagine what's going through Jeno's mind; it's probably not near as bad as what Mark is thinking about. 

"I have a.. a little packet of gel that I found." 

"Found?" 

"...Stole." 

Mark chuckles, "From who?"

And he thinks he hears Jeno whisper Haechan’s name but he's not too sure. Regardless he doesn't plan on telling. 

"Did you only take one?" 

"Yeah..."

"Jeno, have you been using the same tiny lube packet for the past month?" 

Suddenly the door whips open and a very anxious looking Jeno appears, shirtless and wrapped in a towel. 

"How did you know that??" 

Mark swallows it down, all of the intrusive thoughts and feelings. 

"Why did you think I had that talk with you?" 

Jeno frowns but it's cute, too cute in fact Mark has to look away in fear for his blood pressure. 

"Look I, I have some. I have a bottle of it and I want you to use a fair amount okay?"

The bathroom light flows into the bedroom as Jeno opens the door wider to follow Mark who heads to the closet. He kneels down and digs a bag out from under his pile of clothing. 

Jeno gawks when Mark opens the bag. It's not filled to the brim by any means but it is rather full of colorful toys and objects of all kinds for any pleasure you could want.

He looks up at Jeno and his heart beats. He remembers his first toy and how exciting it was, then his second and third and fourth. He admittedly lost count after five and once he bought his first gag, collar and leash set well; it's been uphill from there. 

Jeno kneels down next to the bag and just stares into it. 

"You can touch the stuff if you want. I clean them before and after use so it's all sterile." 

Jeno's gaze looks like he's seeing food for the first time, wild eyes and ready to dive in but not sure where to start.

Instead, Mark digs into the bottom of the bag and pulls out not only the lube but the perfect starter dildo. 

Not too hard but not too soft. Thickness doesn't get much bigger than an inch and the length rests around three and a half inches. He hands it over to Jeno with the lube which he takes with slight hesitation.

The kid hasnt spoken a word since leaving the bathroom, and he seems to be stuck in a perpetual state of disbelief; or terror, Mark isn’t sure which.

"Hey, you okay?" 

Jeno blinks finally, looking back up to Mark. "I.. I’m."

Mark moves the bag out of the way and sits down in front of Jeno, cupping his hands under the young boys who's still gripping the toy and lube like his life depends on it.

"It's a lot to take in, I know. Do you want me to help you? I can explain the process if you'd like."

He stays calm with Jeno, soft spoken and sits with open arms and ears for anything the younger might need. 

"Will you uh... could you show me?" 

ALMOST anything. 

It's nearly impossible for Mark to hold it together with his eyes bugging out of his head and all, but he takes a deep breath and calmly asks, " Show you?" 

"Y-yeah. You said you would help me and I... I'm scared to do it wrong."

He's taken aback.

Yes, okay, now looking back he possibly could have worded things so much better, but he was hoping Jeno would understand that something like this wouldn't be very appropriate. 

Mark rolls it over in his head for a second, the pros and cons of it all and honestly— why the fuck is he even trying to make a list in his head when all he can think about are his wants , fuck the list ??? 

It's hard to say yes even still, with Jeno so small and young and innocent. Mark isn't like that, or so he thought. Maybe it's just something to do with Jeno, they have spent a good while together at this point.

"I guess I did say it like that, huh." 

Jeno nods, and that pout is ever so present on his face; it's enough to drive Mark to insanity and back. 

"O-okay. I'll help you, but.. just this once."

Bashfully delighted is how Mark could describe Jeno's expression when he says yes. It's so endearing and cute and aching to see, Mark is ready to burst out of his skin. 

But this is about Jeno, not Mark. 

After agreeing, Mark stands up and starts to prep the room a bit. He locks the bedroom door and grabs a clean towel from the bathroom, setting it over the blanket on his bed. 

He sits down on the edge of the bed and motions for Jeno to come over, which he does. 

"Are you wearing anything under your towel?" Mark asks. 

Jeno shakes his head shyly, "N-no." 

"Good, already halfway there." He chuckles, joking to try and lighten the mood. 

It works a bit as Jeno smiles at the joke, though still seemingly nervous. 

"Hey, look at me." Mark calls gently, Jeno does, "If at any point you're uncomfortable with anything just let me know and I'll stop, okay?" 

Mark can nearly see the range of emotions coursing through Jenos head. The thoughts and feelings and possible outcomes of a situation like this, so he reiterates the statement. 

"If at any time you need anything or want me to stop, just lemme know." 

Jeno nods then, looking back down to the floor and shuffles a bit where he stands. "C-could I.. ask for a hug?" 

It's always a bit of a gut punching blow whenever Mark is reminded just how young and scared Jeno is. He's not sure if he should be proud that he's the one teaching and helping, or mortified that somehow he ended up in this position. 

Either way, he accepts with open arms, allowing Jeno to crawl into his lap again and cling on tight for a few minutes as Mark gently rubs his back.

For a moment Mark gets lost. Whether it's the fact that it’s way beyond midnight, or because Jeno likes to use mint body wash, or perhaps the way Jeno sits in Marks lap — only straddling one thigh cause that's all he can really do at his size — or maybe the idea of what all is about to take place; he's not sure which to blame, but it has him drunk and dizzy regardless. 

He tries to hide his increasing breaths but it's really no use. Ever since that first night there's something sickeningly sweet about Jeno that makes Mark psychotic. 

Just then Mark huffs out rather aggressively on accident against Jeno’s neck which has the younger fidgeting and giggling a little. 

"Sorry kiddo, sorry." 

"S'okay, it just.. tickled. But it felt nice." Jeno hums into Mark's shoulder. 

"Felt, nice?" 

"Yeah it kinda... put butterflies in my stomach." 

Oh, oh . Jeno’s neck is extremely sensitive, which Mark guesses that would make sense for someone whos literally only experienced anything sexual alone. 

"I found one of your sensitive spots." He chuckles. 

Jeno sits up then slowly to look at Mark perplexed, "Sensitive spots?" 

"Yeah. Almost everyone has them somewhere on their body. The most common for a lot of people are the neck," Mark reaches out and gently touches Jenos neck which he winces and giggles at seemingly being ticklish too.   "Behind the ears," he brushes back a piece of Jeno’s hair when he moves to place a finger behind his ear,   "shoulders," and his fingers trail down until he touches Jenos shoulder,   "stomach," he lays a hand gently on Jeno’s stomach and the younger not only follows with his eyes but his own hands, placing them on top of Marks, "and inner thighs." They move their hands together to place them just on top of Jeno's thigh. 

Mark is impressed with his own internal strength, as his very primal instinct at this point is to flip Jeno over and fuck him into the mattress until he cant think — but the good man inside Mark knows thats a very bad man thing to do, at least for now.

"S-so what do people do with these se-sensitive spots..." Jeno’s eyes haven't left their hands on his thigh as he stutters his question, breath clearly having picked up as well.

"You can do a lot of things. The idea is to stimulate your body. Basically just make yourself feel good and get uh... worked up, I guess is how you could say it. The most basic form of stimulating those areas though would be to kiss them." 

Mark's heart skips about four hundred beats and sends him directly to his grave when Jeno looks up at him again. 

The demons in Mark's stomach threaten to explode if he doesn't do something soon, but he remains calm. 

"So would you... show me that too?" 

stay, calm.

"Wh-which part?"

Jeno shrugs, "Any of it? Or maybe all of it? I'm not sure..." 

Right, right, he's the one guiding Jeno, not the other way around. He's gotta keep a clear head... if possible.

"Well I uh, I'm not sure all of it would be a good idea right now just because, there's a lot more we want to do. But did you, like? when I breathed on your neck?"

The younger nods, a smile creeping up on his face. "It... made me feel all floaty and warm." 

Mark smiles, placing a hand on Jeno's back to bring him closer again, to which Jeno accepts. 

"Then I'll do that, but instead I'll leave kisses. Is that okay?" 

"T-thats okay." 

Jeno wraps his arms around Marks neck again and leans chest to chest with the elder, to which Mark wastes no time in nuzzling his nose right up against Jeno’s soft skin, breathing in first to drunken himself like a fucking sailor once more. 

He then places the first kiss, a soft simple closed lip kiss right to the warm curve of Jenos neck. The response is nothing short of overwhelmed as Jeno's whole body tenses up and the most pitiful moan leaves his mouth. 

He tries to cover it up with a hand but Mark shakes his head, "You don't have to hide your sounds, baby. I've got you, you can be vocal."

He feels the hand fall and Jeno hugs Mark tighter. His thighs squeezing against Mark's own as he fidgets in his lap and honestly, if Mark thinks he's not gonna make it much longer he could only imagine how hard Jeno is holding onto sanity.

Its gut twisting being able to have Jeno like this. It's a thought he had only around a week ago. Before, he never could have guessed or even thought something like this would happen but, here he very much is. 

And delightfully so as Mark leans in and lands another kiss to Jenos neck. This time slightly more open, dragging his saliva wet lips across the now raised skin. 

He doesn't stop this time for Jeno's reactions which only become more dramatic with each new iteration of kiss — whines and cries of pleasure, along with his urge to not rut against Mark's thigh cute.

Mark continues, leaving one kiss after another after another. Eventually he works his way to open mouthed kisses along Jeno's neck and shoulder, gently grazing his teeth along the skin. He makes sure to be feather light with his actions so as not to overwhelm Jeno, which he doesn't need much help doing as Jeno has been overwhelmed for the better part of fifteen minutes now, trying his damnedest not to grind down into Mark's lap.

"Hey," Mark speaks between laying kisses, "If you wanna use my thigh, you can." 

"Wh-whwhat do yo-you mean?" Jeno asks as if he just ran a 10K. 

"You keep jerking your hips, if the friction of my leg feels good, you can push into it and... ya know, get off on me."

"Th-hats not we-weird?" He asks, muffled through Mark's shoulder. 

"Absolutely not, baby. People do it all the time. You do what feels right."

There's hesitancy at first; all first times are a lot to handle and between getting neck kisses, a new dildo and promises of getting help masturbating; Mark is sure Jeno is reeling right now. 

Eventually Jeno stops hovering over Mark's thigh and presses himself firmly into the strong mass. 

"There ya go, sweetheart." He moves his hands down from Jeno's sides to his hips where the towel is still clinging. 

He grips gently and helps Jeno start to move, "Just like that, roll your hips forward." 

And he does, it's slow and stuttery but Jeno lets out a cry that could wake up the neighborhood. He quickly bites into Mark's t-shirt, nipping some of Mark's skin in the process as well as clawing right through to Mark's back.

It takes a lot of effort not to buck up on his own when Jeno inflicts such accidental pains, but he remains calm. 

Jeno does it again, he thrusts his hips forward against Mark's thigh and shrieks into the cloth between his teeth. 

The tremble from Jeno is enough to shake Mark, it's hard not to let that thought run wild too just like all the others. How cute Jeno would be, shaking under Mark as he stuffs him with his cock, the bulge it could create from how tiny Jeno is compared to Mark, the possible damage he could do to someone so pliant and small. 

Jeno thrusts again, then again and again more rapidly. Each one of his breaths and whines getting higher in pitch until his last thrust he freezes up; all but his legs which are shaking and trembling harder than before as his orgasm flies completely beyond the towel and right onto Mark's shirt instead. 

Either one of them are too fucked out to care, though, as Jeno rides out his high and Mark gingerly runs his hands all over Jenos back and hips still leaving little kisses all over his neck and shoulders to calm him.

Once Jeno has finally settled, save for a few aftershocks that send tremors down his body here and there, Mark shrugs his shoulder up slowly to get the youngers attention. 

He helps Jeno sit up and cups the youngers face with both hands, wiping away any visible sweat or runaway tears that might have fallen. 

"You okay?" 

Jeno's head bobbles in Mark's hands making him chuckle, but it's a clear yes.

"Was that too much?" 

And his little Jeno bobble head does his best to shake a 'no' Mark's way. 

"You did good, sweetheart." 

Jeno opens his eyes then to look at Mark. They're lidded and it's clear he can't open them much further but the way he looks at Mark is gut wrenching and possibly enough to give Mark a hero complex if he's not careful. 

"I did?" 

"Well, did it feel good?"

Jeno nods. 

"Then yeah, you did amazing."

His eyes close again in his soft, angelic smile when he whispers "Thank you hyung." 

Too. Cute. Are the only words that rattle around inside Mark's already full brain as he stares at the pure little bubble he holds in his hands.

"Hey you," 

Jeno hums. 

"Are you still interested in the, other thing ?" 

Jeno wakes up to that, eagerly grabbing hold of Mark's wrists and staring at him bambi eyed. 

"Y-you still wanna?"

Mark chuckles, cute cute cute . "Of course I do, but it doesn't matter what I want. It's what you want, as long as you think you're ready." 

Cause although Mark is having the time of his life getting to play with and enjoy every part of Jeno, he still needs to be Jenos responsible sex coach at the end of the day. 

"I think... I think I'm ready."

Eagerness is far too adorable on Jeno and Mark hopes he gets to see it for the rest of his life if he's lucky. He brings Jeno's head closer and gives the younger a small kiss on the forehead which Jeno preens into. 

The kid is fairly light, which is good for Mark because it means he's able to pick up, move and adjust Jeno exactly how he needs to. When he lifts Jeno off his lap he sets him on the towel he laid down previously.

He pinches the towel around Jeno’s waist, "Do you mind if I remove this?" 

Jeno shakes his head and helps take the towel off, though it's evident he's still a little shy with the way he presses his thighs together with his legs curled up. 

Mark tries his best not to stare too hard, but he has to admit, the way Jeno’s balls peek out from the back of his thighs is a little distracting and a whole lot setting fire to his spinal cord. 

He averts his eyes as quickly as possible to discard the towel, then turns back to look over the bed to find the dildo and lube bottle. He collects both then moves to sit in the center of the bed right in front of Jeno. 

"Hyung?"

Mark hums. 

"Do you also want to uhm... maybe, take off your..?"  Jeno points to Mark and his clothing.

Mark looks down at himself, he supposes he is rather over dressed for the occasion what with his sweatpants and t-shirt. 

"Would it make you more comfortable if I did?" 

Jeno nods frantically and well, who could say no to someone asking so nicely and earnestly. 

Mark grabs the back of his shirt and pulls it off over his head. When he refluffs his hair he locks with a starry-eyed Jeno, mouth agape as he watches in anticipation. 

Every time a moment like this happens Mark only then remembers that this is one of the first times Jeno is seeing something like this right in front of him; i.e. he's the center of Jeno's world right now, and that's either gonna be really fun or really dangerous in the long run. 

The younger watches as Mark tucks his thumbs into the waistband of his sweats, shoving them down over his briefs and off his legs tossing both articles of clothing to the floor. Jeno can't rip his eyes away from where Mark's cock sits, hugged tightly by his underwear, standing up right and throbbing from how hard it is. 

He hears the way Jeno's breath jumps when his dick twitches. Comparatively, yeah, Mark is huge against Jeno. So even though it's almost embarrassing Mark to let the kid stare, he allows it.

After a few minutes of Jeno ogling Mark and all he has to offer, Mark gently lays a hand on Jeno's knee to grab his attention again.

"Do you want to stay on your back for this?"

Jeno shrugs, "I'm not sure. What do you think is best?" 

"Well," Mark hums, "how do you usually position yourself?" 

Jeno twists his lips to the side while he thinks, then hums. "I've tried a lot of different positions, I'm not sure."

"Which ones your absolute favorite then?" He says with enthusiasm. 

Slowly Jeno rolls over to his side then props himself up on his knees and Mark has to hold his breath for this, he fears if he's too lucid he might keel over and die at the sight.

He spreads his legs apart and once more Mark can see Jeno shaking from a mile away. He reaches forward and lays a hand on the small of Jeno’s back which he relaxes under almost immediately. 

From there, Jeno lays one arm down flat then rests his head on that arm, the other one lays out next to his face freely; assuming that's the hand he usually uses to try and finger himself with. 

It's a sight to see and Mark isn't sure he was ready for it. The dip of Jeno's back is perfect. From his hips to his waist there isn't drastic curvature as his body isn't totally mature just yet, however the plump of his ass is cute and perky as he does have a little bit of meat back there.

Watching as Jeno’s little cock bobs between his legs, already fully hard again and dripping precum onto the towel Mark feels that twist in his gut again, the one telling him to fuck the living daylights out of Jeno until he cant see straight — but he refrains, hes a good man . 

Mark swallows if only a pound of dust as his throats gone completely dry watching Jeno fix himself into this position. He runs his hand from the small of Jeno’s back, down the curve of his ass, trailing down the back of his thigh and back up again. 

Before he can lose himself completely he tries to find ground by looking over to Jeno, "This is the most cozy for you?" 

Jeno nods as he bites at his lower lip, his toes curl and relax as a waiting reflex and the urges to do bad things keep getting stronger. 

Mark smiles and uses his other hand to brush pieces of hair from Jeno's face, "Good, you look cozy and pretty like this."

Jeno smiles the widest Mark has seen all night, so wide it finally gives Mark the first wholesome thought since all of this started — how he would love to wrap Jeno up in a blanket and coddle him forever. 

There will be other times for that, however. For now, not only is there a greedy baby in his bed but a rather angry cock in his briefs as well that could use a lot of attention. 

"Okay, I'm going to try my best to walk you through step by step what i'm doing alright?"

Jeno nods as Mark reaches forward to grab his hand which Jeno graciously gives to him.

"First i'm gonna put lube on your fingers and I want you to rub your fingers together for about five to ten seconds. This helps it warm up so its not cold against your body. This is more of a personal preference, its not a super important step if you don't care, but if you're with someone else you should always warm it up for them." 

Jeno listens attentively and nods as Mark pours some of the viscous liquid onto the tips of Jeno's fingers. The younger then uses his thumb to massage into his middle and ring fingers for a couple of seconds like he was told. 

"All warm?"

"Yes hyung." Jeno replies with a smile.

"Good. From here I want you to reach back however is most comfortable for you and start to massage your hole in small circles. I want you to try and relax as much as you can, okay?"

Jeno whispers a tiny okay, clearly getting a bit shy about the instructions. If he's honest, Mark isn't too thrilled to be saying all of this out loud himself. He's not the greatest at words like 'hole' or 'cock' or quite literally anything that blatantly describes human anatomy; he's shy and weird, dirty words make him uncomfortable no matter what he's doing. 

But, for the sake of making sure Jeno is practicing safe habits, he will swallow all of the icky feelings he gets when saying those words and deal with it. 

When Jeno snakes his arm under his body and reaches up to press his middle finger against his hole, Mark then sees the issue. Jeno is still growing, and sadly the overgrown part of his features all went to his big eyes, big nose and big ears. They did not , however, go to any lengthening of his limbs. Therefore making his arms just slightly too short while his torso is just a tad too long for him to ever comfortably reach back without contorting his wrist in strange ways that can’t feel pleasant. 

Mark doesn't intervene just yet, however. He wants Jeno to have a moment to himself so he can really relax and get himself prepped properly; he has to learn sometime.

The first initial touch makes Jeno gasp softly into his arm, then the circular movements jumpstarts his rapid breathing as he begins to coat his hole with his lubed finger. 

Mark sits back on his heels as he watches Jeno pleasure himself. He reaches out to gently stroke Jeno's hair, letting him know he's there for anything. 

"Good boy, you're doing great. Try not to tense your muscles, relax as much as you can into the feeling."

All that Jeno can do is moan and whimper into the towel under him, eyes squeezed tight as if he's already getting fucked — poor baby is so sensitive of course he would wake Mark up nearly every night. 

Mark watches the twitching and tensing of each muscle as closely as he can, waiting for when Jeno finally blisses out and forgets about his nerves just enough to untense. It happens sooner than he thought it would, and he praises Jeno for that which brings another big toothy smile to his face. 

"Do you think you feel ready for a finger?"

Jeno nods. Mark knows Jeno has done this plenty of times before, so he's not overly worried that anything will go wrong, but he monitors closely anyway. 

The boy squeezes his eyes tighter as he starts to put pressure on his hole with his middle finger. Still rotating small circles around the outside until the tip of his finger disappears inside of him. His mouth opens wider in a heavy breath as the first breech hits his body and he pauses to savor that feeling.

Mark doesn't have an amazing view of what's going on, he fears if he moves from where he is he'll see too much and go absolutely ape shit at the mere sight of Jeno's ... everything. 

He can see just enough though, and making sure to see Jeno's facial expressions is good for monitoring pain levels as well as keeping Jeno calm with light petting. 

Once Jeno feels calm enough to continue, he wiggles in his position settling down harder into his chosen pose. It doesn't take much effort for Jeno to get past his first knuckle nor does he feel the need to pause before pushing on further. It's at the second knuckle he gets a little caught up which is exactly where Mark thought the problem would be. 

Once again, Jeno's arms just aren't that long and his torso keeps him from being able to really reach himself properly, which causes him to have this exact problem; getting stuck just at the second knuckle.

Then the whining starts. The all too familiar whining that Mark remembers from the bathroom, only now he can see it. 

He watches as Jeno’s face twists in frustration and he tries so hard to lower his shoulder more to give him more reach. How he bends and moves his wrist to try and push himself in further which at some point he does get a little deeper; but not by much, and not without a little bit of pain to his arm. 

"Jeno," Mark speaks with mild concern.

His eyes open for the first time and he looks up to Mark with pinched brows and a pout. 

"Do you always get stuck right here?" 

Jeno nods, the pout becoming increasingly sulky. 

"Do you want hyungs help?" 

And another nod, "It's just... hard to reach from any position."

Mark brushes his fingers through Jeno's hair a few more times, "I know, baby. Your body hasn't caught up with you just yet, you poor thing."

From there Mark grabs the bottle of lube and preps his own fingers while also simultaneously trying to ready himself for the most intense internal battle he's ever going to have. It's always tempting to go a hundred miles an hour when you're in the driver's seat, but he has to keep in mind he's not the only one in the car right now.

Mark doesn't leave Jeno's sight completely, he stays just where the boy can see him but moves to where he can see what he's doing. Mark takes a deep breath as if he's the one who's about to be teased, touched and fondled and steadies his head before placing his two fingers on Jeno's hole.

It's a heavy shock to his system he wasn't ready for despite taking his sweet ass time. There's a buzz in his spine that's different from anything he's felt, something like a wasp's nest ready to explode.

Perhaps from the idea that Jeno is so young, or that its his first time doing something like this, or the fact that he entrusted Mark to do it; or, fuck it , its all of the above and so much more that Mark is going to have horrible wet dreams about for the foreseeable future. 

He does his best to pay attention to what he's doing, making sure not to be too rough or too light on Jeno. When he starts moving his fingers in circles Jeno begins to whimper again, the sweetest sounds Mark doesn't think he'll ever get tired of. 

"Tell me if it's too much at any time, okay kiddo?" 

Jeno lets out a long whine when he nods, moving one of his hands down and open for Mark to grab hold of, so he does. 

It's surreal getting to feel someone so smooth, someone who hasn't even had to shave or wax just yet because they haven't hit that stage in life. And while a thought like that shouldn't have Mark teetering on the edge of an orgasm, he starts nearly panting like a dog himself at all the intrusive images in ways he wishes to bend, lick, bite and savor Jeno.

He shakes the ideas out of his head and focuses, relishing in the moans and cries that Jeno gives him as he starts to put pressure on Jeno's hole with his middle finger. Slowly he pushes and eventually the tip slides in without resistance and the two gasp out in unison. 

Mark moves without fervor, pushing his finger in deeper and deeper until he reaches the second knuckle. He uses his other hand to smooth his thumb over Jeno's to sooth him as Jeno squeezes back, everything feels equal parts chaotic horny as it does sickeningly loving. 

"Still doing okay?"

A small nod but Mark isn't worried. Jeno isn't showing any signs of distress, and if anything he's just showing signs of want with how he wiggles his hips and ever so subtly tries to push back onto Mark's finger. 

Once Mark feels ready, he finally pushes in all the way, letting his finger rest there before he begins any movement; he needs to rest as much as Jeno does if he's honest. 

Jeno wiggles and writhes around in his spot, impatiently waiting for Mark to do anything else but not really having the brain power or bravery to beg for it just yet. 

Mark chuckles, "Are you ready? This shouldn’t feel too strange, just different."

An affirmative butt wiggle and aggressive head nod is all Mark needed for the go ahead.

He paces himself, pulling his finger out to the tip before slowly pushing it back in all the way to the third knuckle. Jeno's moans already sound slurred and no less whiny than before, but Mark wasn't expecting them to get even better . 

When he pulls out a second time he moves a bit faster and with this Jeno starts to arch his back in response. When he thrusts his finger back in at a moderate pace Jeno makes a new sound, one more of a squeak than a whine or a moan. 

"Everything okay?" 

"Y-y-yes, please do-don't stop~..." It's a pathetic sounding whimper at the end, and Mark would be lying if he said it wasn't nearly the nail in his coffin. 

He proceeds, however, because chasing Jenos orgasm is much more important that reaching his own. 

The cycle repeats and with each pull out there's an equally increased speed with thrusting inward and it draws the most angelic sobs from Jeno that grace Mark’s ear drums.

They're not smooth and no two are the same. They're whiney and high pitched, so much higher than Mark could've ever expected. His groans last for more than ten seconds at a time and they fade off into symphonies of "Hy-hyung don't, don't stop please please pleasepleaseplease don't s-stop a haa ~"

Which is just the tip of the iceberg, because up until now Mark has never heard a bad word come from Jenos mouth. Not until he speeds up, thrusting fast enough for the lube to squelch and bubble around his finger then completely drops the speed just to hear Jeno mewl out the most agonizing, drawn out " Fuuuck~" he's ever heard in his life.

Mark stills if only the thrusting while he shifts his focus more to stretching so he can work Jeno up to two fingers. He talks Jeno through it but he's not entirely sure Jeno heard a word he's said. 

At this point, any good teacher would probably stop the whole session to give their partner a break, or a moment to think and process any sort of information. However, Mark never said he qualified as a teacher, not by a landslide , and who is he to stop all the fun Jeno's having other than Jeno himself?

Of course all of that really boils down to selfish thinking, but at the same time, Jeno really is enjoying himself; so why break the moment? 

Mark does his best to very graciously and slowly work Jeno open on his finger. Pulling on one side of his hole then the other until it begins to open and flutter on its own with Jeno's pulse. 

"You're doing great Jeno-yah. Are you ready for the other finger?" 

"I-I think so hyung, I want it I th-think im ready."

Ready he is when Mark parallels his ring finger with his middle finger and pushes them in together. Jeno's knees start to wobble where he holds himself up, the sensation rolling over him like fire and he quickly turns his face to the towel biting into it. 

Mark can't help but to salivate at the sight. Jeno has no problem taking Mark's fingers. The skin stretches around them and swallows them whole with ease, and it once more has him wandering to places he has no business being in. 

Once both fingers are in completely he stops, letting Jeno adjust and get comfortable with the new, fuller feeling as Mark's fingers are much thicker than the boys. 

Jeno sings his cries into the towel between his teeth while Mark sits there, soothing him the best he can. Jeno’s body responds with twitching and muscles contracting around Mark's fingers which only beckons his orgasm even harder, feeling Jeno tighten and release around him and aching to know what that must feel like on his own cock. 

A luxury he can only dream of. 

Eventually, Jeno squeezes Mark's hand and raises his face just enough for him to speak somewhat coherently, "Y-you can, ahah~, keep going."

Mark really isn't sure who is the more broken of the two. 

He could argue Jeno considering the poor boy has been run through the ringer with just a single finger and some sadistic determination from his partner. But Mark has to endure just painful scenarios of the different ways he could take Jeno, without actually getting to enact any of them all while having Jeno quite literally at his fingertips. 

Mark listens to Jeno's plea, wasting no time in spreading his fingers, beginning to scissor Jeno open which the younger probably didn't anticipate feeling so dizzying in the way he whines drunkenly. Jeno bucks his hips back against Mark's hand and groans into the towel under him.

The elder keeps in mind the girth of the dildo, roughly an inch so he really doesn't have to push Jeno any further than how far he's gone already. Anything extra and he would just be doing it for himself at that point, and while it's tempting to see just how far he could push Jeno before he inevitably breaks; he doesn't want Jeno's first time to be a horror story. 

Though, he does spread his fingers apart just a bit further, rotating them one last time just to see Jeno's toes curl and his body writhe where he sits. It's pleasing to know he's the cause of so much pleasure and want, even if that is feeding directly into his powertrip.

Once his fingers settle Mark removes his hand from Jeno’s and reaches over to pet the back of his head getting his attention. 

"You still with me?"

The boy nods.

"I think you're ready for the toy if you still want it."

Jeno shakes his head. 

And suddenly the world stops, Mark feels the panic well up in him again and he fears he might’ve gone too far, did he go too far without asking? Is Jeno really not happy and suddenly Mark was just getting off to Jeno’s pain? Is Mark actually a worse person than he initially thought? What the fuck did he do ??

"Do-don't want the toy." Jeno croaks out. 

Mark's life is flashing before his eyes, "Why's that?" he can barely get the words out. 

Jeno reaches out to touch Mark's thigh and does his best to make eye contact at the awkward angle, "I want you."

And well, now his heart has stopped for a whole new reason. 

It's a bold request. It's a major bold request from Jeno . Something that Mark never anticipated from the young boy seeing as less than 48 hours ago he was embarrassed by a purple butt plug , and now suddenly, hes asking with his whole chest for Mark to fuck him.

Could it be real? Is Mark so deserving? Obviously he should say no, right? But could he possibly bear with the idea of turning down his sweet, loving, trusting Jeno? Could he live with the idea of that perpetually sad face for as long as the two live together? 

And of course, what about Mark? He did all this prep work and love and care and teaching, there's no possible way any sane man would turn something like this down. 

But the most important question is; can Mark trust himself? Can he be held accountable for someone so delicate and small, especially for a first time? 

After a crisis that lasted longer than the cold war, Mark finally reaches his final verdict. If anyone should be responsible for deflowering such a soft, pretty soul, it should be someone Jeno trusts. And if that just so happens to be Mark, then he gladly accepts.

In the most elegant way possible Mark removes his fingers from Jeno leaving the young boy whimpering but only for a brief second. Once he wipes his fingers clean, he helps Jeno get from his knees back to his back so he can lay and rest for a moment. 

Mark fits himself between Jeno’s legs best he can, their size difference being large enough that Jeno's legs don't spread wide enough for Mark to really fit there. Instead he has to drape Jeno’s legs over his thighs which leave his feet dangling just behind Mark. 

While letting Jeno lay and rest his body, Mark massages Jeno’s thighs helping the built up tension and possible exhaustion from being up on his knees for so long. 

"Are you sure, Jeno?"

Jeno looks up from where he was watching Mark's hands and smiles fondly. "You're my closest friend and I really like the way you treat me. I was also, uhm..." Jeno trails off suddenly getting shy.

"What? You know you can tell me."

"If I tell you, you might get mad."

And well of course, that only peaks Mark's curiosity more.

"C'mon, do you ever see me get mad?"

"No..." Jeno hides behind his fists that are balled up to his lips. 

"Exactly. I could never be mad at you anyway." He finishes with a smile.

"You promise?"

Mark leans over Jeno's body then, staring down at the smaller boy before landing another kiss to his forehead. "Promise."

Jeno's smile melts from excited to nervous as he gets ready to speak. 

"Well, I was awake, one of the nights you were uhm... to-touching yourself and I kinda saw... everything."

Well doesn't Mark just feel like a fucking jackass now. "Oh, oh man Jeno I'm sorry kiddo. I shouldn't have done that so openly i'm sorry you had to—"

"No! No, it's okay. That's not why you'd be mad at me though."

Mark quirks a brow at the boy. 

Jeno sighs, blush burning his cheeks and ears so bad Mark can feel the heat radiating from his face. 

"I ... usually was thinking about you in the bathroom when I was trying to... use the thing." 

Marks not even sure what's real anymore. All of this is starting to feel like some sort of elaborate prank to get him thrown in jail or an insane story made up by some psycho who lives in a box with no sunlight. 

His eyes flit from place to place as he tries to process what Jeno just told him, and honestly, if none of this is real then go big or go home right?

"Are you mad?" Jeno peeps out in his smallest voice ever, it nearly breaks Mark's heart. 

In one motion Mark grabs Jeno and sits him up into his lap, bear hugging the boy with a wild grin, "Oh i'm soo mad, I'm just so angry at you I could.... I could eat you !" 

And Mark will never be more grateful than to hear that crackly laugh that breaks all over the place from growing vocal cords as he makes growling and biting sounds right up against Jeno's neck. 

It's even better when he pulls away to see those dough ball cheeks turning his eyes to crescents with his big smile and even larger than life laugh. 

"I told you Jeno, I could never be mad at you." 

Jeno's smile is demure as he shrinks in on himself, "I believe you." 

Mark feels thankful that he's in the same boat with Jeno then, the idea of one another driving them to brinks of insanity and fantasy worlds. Luckily, this is no longer a fantasy, and he really does have one of the sweetest boys in existence in his lap right at that moment. 

And sweet he is, with his galaxy filled eyes and soft pink lips that are absolutely inching closer to Mark's face. Jeno tilts his head and before Mark can think to act Jeno places one of the most timid, unsure kisses right on Mark's lips. 

Mark wants to explode out of his chest with just how cute Jeno is. Cute, adorable, endearing, sweet, fuck it Jeno is all of the above and so much more and Mark can't get enough especially with his heart bursting at the seams so suddenly. 

He leans into the kiss, both of his hands splayed across Jenos back holding him firm against his chest. Jeno's arms going to hug around Mark's neck once more as they share one of the most juvenile, smash faced kisses possible.

It makes Mark giddy, it reminds him of his own firsts all over again and he suddenly wishes he could replace all of those with just Jeno. It's not necessarily being in love but it's something along those lines. Requited care and adoration with the full certainty to protect the one he does love; a long title but the truth nonetheless. 

The kiss is rushed and followed by a hundred more of the same variety. Jeno pecking at Mark's lips only slightly opening to catch his bottom lip between his own two then repeating the process. 

Marks heart clutches as the purity of it all, the innocents of just going for it and asking questions later. It makes Mark smile and chuckle into the kiss as he gently breaks the two of them apart. 

"Slow down kiddo, you can take it slow with me, it's okay to relax."

The blush is never ending for Jeno, but thankfully neither is his smile no matter how coy it may be. Jeno nods and giggles, "I guess I was getting a little... excited." 

"That's okay. Excited is cute on you." 

Jeno smirks before going shy again, "Hey, hyung?"

Mark hums. 

"Will you teach me how to kiss? Like, properly?" 

Just shoot him if hes dreaming, he never wants it to end and by god he will do everything in his fucking power to make sure it doesn't. 

Mark doesn't even allow his brain to waste time. Bringing a hand up to cup Jeno’s face and brushing his thumb over the swell of his cheek, he brings Jeno's face closer until their lips meet again. 

He physically feels Jeno melt into Mark's chest, leaning against him like a smitten puppy. Jeno follows Mark's moves fairly well, it only takes him a second of lag time to notice that Mark parted his lips and peaks his tongue out, which Jeno mimics, the tips of their tongues brushing past each other and it feels like electricity. 

Mark leads Jeno slowly into the corner he wants. He parts his lips again and beats Jeno to anything else, going in for a gentle bottom lip bite, grazing his teeth along Jeno's lip faintly before letting go. 

After he demonstrates, he lets Jeno attempt the same tactic, which he performs well, nearly catching Mark off guard. 

Mark lets go of Jeno’s face to opt instead for grabbing a handful of his ass which the boy preens into Mark's mouth over. His moan heady and whiny as ever but he doesn't dare part his lips from Mark’s. 

Instead he attempts to deepen the kiss, parting his lips first in which Mark follows intrigued. Jeno seems nervous, like its possible to make a wrong move. Mark doesnt let him sit there and fester, though, he takes the opportunity to slide his tongue past Jenos allowing Jeno to understand its okay to /take. 

He dives in full force, raising a bit in Marks lap when he does, slipping his tongue right into Marks mouth before letting out a deep groan caused by Mark suddenly sucking on Jenos tongue. 

It's clearly something Jeno has never experienced or perhaps even seen before as he seems so taken off guard and very turned on by; if the wet patch on Marks stomach is anything to go off of. 

Mark slowly releases Jeno and the boy sits back with one of the most fucked out, in awe expressions one could possibly manage.

"So, how was that?" Marks voice low and gravelly matched with a dangerous smirk.

Jeno huffs out and bites at his lower lip, truly unable to give an answer though it seems obvious theres a lot running through his mind. 

"You know you can say anything to me, right Jeno? Even dirty things if you're thinking them." 

His eyes go a little wide at Marks statement but his little side smile has a different story to tell. 

"Anything?"

Mark nods, "Anything."

Jeno visibly gulps before straightening his back a little. Mark seemingly watches as Jeno gets into the proper character for whatever /foul thing hes about to tell Mark, lidded eyes and spit slick glossed lips parted just perfectly. 

Jeno leans into Mark face to face, just barely touching his lips to Marks again and leaving the ghost of a kiss before whispering "Please fuck me."

There is definitely nothing short about the short circuiting that goes on in Marks brain as he tries to quell an untamable beast with rational and reason. 

Its everything bad in his head coming to fruition. Turn Jeno over and fuck him into oblivion, make sure he cant see for a week, cant walk, doesnt know his name. Make him cry make him beg for you, pin him down and ravish him until theres nothing left but tears and flesh. Make him yours. 

Mark rolls his shoulders, his neck, he takes a deep breath in and holds it, then lets it go. 

Hes a reasonable man, a good man. He knows there is a time and place for things, and while this is the place it is absolutely /not the time. Mark wrestles all of those thoughts back into their dingy little cage, locking them away for another day and finding his eyes locked with Jenos. 

Mark gets a firm grip on Jeno and sits up onto his knees, picking Jeno up with him to then lay him back down. Jeno clings like a koala, not letting go if he can help it and pulling Mark down into a quick few kisses. 

And this is what Mark wants, for the /both of them. Something tender and memorable in the best ways — he was crazy to doubt himself to begin with truly. 

Mark returns the kisses along with some that trail from Jenos cheek to his neck, his shoulder, his collar bones, and teasingly he plants one right on Jenos nipple just to see a reaction. Nothing short of adorable as Jeno squirms and bites back his giggle. 

The elder breaks free of Jenos grip by kissing down his chest to his stomach to his pelvic bone which is absolutely /beautiful to stare at. Yet another smooth surface with very fine, soft baby hairs that have yet to grow into their final potential. 

Mark breaks from his trail of kisses to then finally remove the hell cloth that are his briefs. He nearly hisses at the feeling of the air hitting his cock as it feels like an ice bath. 

Luckily he gets distracted by a wonder filled, eager Jeno who is staring down his body like its the only thing in the world. 

"You're... really handsome hyung. Pretty too..." 

"Jeno, I'm going to absolutely eat you whole. You are the most precious thing in existence, you know that?"

The comment blind sides the younger in the way his face splits into the largest grin possible. 

After discarding his underwear, Mark grabs the lube left on the bed and pops the lid, drizzling some of the clear fluid directly onto his cock; a momentary mistake as its more cold than the air was, but it makes Jeno laugh. 

"Do you just personally prefer cold lube then?" 

"Ha, ha," Mark fake laughs, "Good listening skills, but no. I just happen to be in a bit of a rush."

Mark cant say hes not proud of Jeno, at least he knows all of his teaching didnt go to waste. 

Just before Mark can rub the lube along the length of his cock, Jeno sits up and makes a tiny noise to interrupt him.  "C-could i? maybe?"

He blinks. Looks down, then to Jeno. "I- yeah, sure, if youd like to."

To say Mark wasn't prepared is an understatement. 

Getting to touch and marvel at Jeno was already a blessing in of itself. But Jeno outright asking to touch Mark, being eager to just simply spread lube along the shaft of his dick ? Theres no category for that, mainly because Marks brain stopped working somewhere around the time Jeno opened the bathroom door.

Jeno wraps a hand around Marks cock and immediately theres a fire climbing the grooves of Marks spine, his legs feel like static and he has the thought capacity to match. When Jeno slides his hand down from head to base Mark can't stop the groan that rumbles from his chest cavity. 

The sound alone makes Jeno release a soft gasp. Chances are he didnt expect such a visceral reaction from Mark, but its the consequence of being rock hard at all times, now all Mark can do is pray he doesn't fuck this up by busting the second his head touches Jenos hole. 

Jeno works slow, introducing his other hand so he can twist and tug softly with both, coating every possible inch of Marks dick. 

Once hes covered, Jeno wipes his hands on the towel and leans back again, Mark following in toe resting a hand on one side of Jenos head while the other gathers a bit of lube to press up against Jeno.

The younger gasps at the feeling when Mark massages the area for a second, dipping his fingers in with ease which already has Jeno gasping for breath. 

"I'm gonna warn you of a couple of things and you need to listen to me carefully, okay?" 

Jeno nods fervently. 

"We're skipping a step for you, and you saw I'm bigger than that toy I gave you, which means this might be a pretty big stretch okay? It's gonna feel a little overwhelming at first but I'm going to go the /slowest/ i possibly can."

Jeno takes a deep breath and nods again, listening so attentively hes not even focused on Mark fingering into him again, attempting to help stretch him open a little more. 

"If at any point its too much for you, or if it hurts, what do you tell me?"

"I tell you to stop."

Mark nods, "Thats right. And I will stop, I promise."

"I trust you" Jeno peeps out between his labored breaths. 

"And I trust you. The last thing I need you to remember is /stay, relaxed. If you dont relax your muscles i'll have a hard time pushing in and itll be really uncomfortable. Just keep breathing and dont tense up."

With a big deep breath intake, Jeno nods again and on the release Mark can see Jenos body relaxing into the bed.

Once Mark finishes running through all the basics with Jeno and feels that he's adequately stretched to at least get started, he prepares himself for the next challenge; dont bust like a fucking virgin.

Moment of truth for the both of them. Mark lines himself up to Jeno and as soon as he presses the head of his cock against him, Jeno grips Marks bicep for dear life which is the much better alternative to him tensing and freaking out entirely. 

He focuses on his forcefulness and his speed, because he would never forgive himself if he somehow hurt Jeno. 

Mark puts some pressure into his hips leaning forward to begin pushing in. He watches as the very tip starts to disappear while Jeno works on staying relaxed and calm, breathing deep with tiny whimpers as the stretch increases. 

"You're doing so good, baby. Re-really good."

Mark does his best to reassure Jeno the whole time, it can be scary the first time and honestly Jeno is doing so much better than Mark could've asked for. 

After a brief pause Mark pushes forward again and he starting to really feel the effects. Jeno is already taking his head so well Mark is fighting two monsters now; don't nut now, and dont rush the process. 

Its a tricky balance, but he's done it before. Perhaps not to such a scale, but if he can do it once he can do it again. 

It takes nearly an eternity just to hit the halfway point, but the simultaneous sighs of relief and moans that break from the two once the entire tip of Marks cock makes it in is almost comical. 

Mark removes his hand from his dick and very carefully adjusts himself so that he can really face Jeno now. Both hands resting on either side of Jenos head and Jeno still clawing into Marks forearms for sanity. 

"You still doing alright?"

"Nyah~" Jeno nods. 

Mark chuckles, "And how does it feel?"

Jeno rolls his head from side to side slowly while still taking deep inhales. "I-its full, and warm a-and it's a lot but its good, its 'sgood."

Mark has never really seen what 'dick-matized' looks like, but if he had to guess, this is probably the epitome. 

"Will you tell me when you're ready for more?"

"M-more, more yo-you can give more no-now, now~"

Mark really could get lost in the cuteness of Jeno's nonsensical babbling, but instead he listens to Jeno and takes his word that hes ready for more. As promised Mark moves slow, /agonizingly so.

The saving grace here though is the new sensation for the both of them. Mark cant stop thinking about the absolute hairlessness of Jeno, and the way its not by choice its just by nature until hormones really kick in. 

The feeling is so different, hes silk soft and Mark can't even achieve that with laser removal half the time; color him jealous. 

It begins to take less time to push into Jeno since at some point it all just starts to feel the same in the sense that its full and heavy and Jeno just absolutely wants /more. 

Not just of Mark in him but Mark in general as he moves from babbling nonsense to pulling Mark down into slow, sloppy kisses that Jeno really had no care about how the makeout function worked. As long as Marks lips were on his, he was fine; and subsequently so was Mark. 

At the halfway point, however, Jeno did start to talk more about feeling really /really full. Mark wasn't expecting anymore surprises, the universe had already rewarded him enough with all the wealth he couldve asked for. But, upon looking down he couldnt help but notice the /tiniest bump beginning to form in Jenos lower abdomen.

It took every ounce of his strength left not to cum right there at the sight. Even better is the fact that he knew this was a possibility, and the gods really do love him. 

It doesn't take much longer for Mark to finally have buried himself in Jeno, and thankfully without a problem other than handsy, incoherent boy; though he would hardly call that a problem honestly. 

Once the first goal is achieved, Mark settles and rests his arms and legs for a bit while he lets Jeno get used to the pressure, the weight, the fullness of it all. Allowing Jeno to tense and release around him, wiggle and move as he pleases, whatever he needs to do to feel one-hundred-percent comfortable.

Jeno is truly resilient in so many ways, and one of those being quick to adjust to the feeling of being stuffed to the brim. 

"How's it feel?" Mark hums softly against Jenos neck where hes been gently biting and kissing for the past couple of minutes. 

Jeno cards his fingers through Marks hair while he still writhing around under Mark, though hes much more lucid now. "It's.. really re-really good, wasnt expecting th-this feeling."

Mark chuckles, "It's new, huh?"

"Mmm, mhm~" Jeno hums in his blissed state.

"Do you feel ready for the actual uh..." 

"/Fucking?" The word rolls from Jenos tongue so easily it makes Mark nauseous in so many good ways. Is this his doing? Did he break or perhaps even pollute their little baby Jeno? 

If so, he guesses theres no turning back, might as well take it home from here.

Mark nods while chuckling lowly, "Yes, are you ready for that?"

"I feel.. about as ready a-as I can be." 

And with that Mark props himself up to his knees again then setting straight up. He lifts either one of Jenos legs and hooks them over his forearms as he steadies himself. 

Mark doesnt take near as long this time. He drags his cock back at about half pace and it once again drives Jeno to pure insanity with his gasps and whines, and his knuckles turning white from how hard hes gripping the towel. 

The reaction is farm more dramatic from Jeno when Mark pushes back in within seconds. Jeno biting into his hand as not to scream at the top of his lung and honestly, Mark cant blame him since he feels right there with the boy. 

To make matters worse, Mark gets to watch one of the prettiest sights ever. The rather dramatic belly bulge every time he sheaths himself deep in Jeno once more, poking up just at Jenos belly button and Mark couldn't be more elated.

The second drag is even easier and slicker when he pulls back, and of course Jeno really can't contain himself with his slurs of profanity and begging for Mark to move faster; it's clear he's absolutely lost it. 

Mark isnt far behind however when he thrusts back into Jeno and the knot in his gut tightens again. Its been a threat for hours and its ready to come undone as soon as possible. 

Not if he can help it, though. 

"Ma-mark, mark hyung~" Jeno whines out breathlessly while reaching his hands out.

"What's a ma-mattter?" Mark intertwines their fingers and leans in a bit to hear Jeno better. 

"Hyung, f-faster, please..."

And if somehow Marks eyes didnt roll into the back of his head, hes not human. 

He's worried about going any faster just yet. However, he trusts Jeno, and Jeno trusts him, which means Mark can trust himself not to do something stupid. 

With that being said, Mark takes a moment to readjust the two of them. Moving Jenos legs from his arms to his chest where the heel of either foot just barely touches his shoulders, and while he still has Jenos hands in his, he tugs to boy a little closer.

From there, Mark makes sure Jeno is really ready, and when he gets a whined out yes and more pleading; he doesnt hold back. 

The first thrust isnt so bad but it still catches Jeno off guard in the way he screams out. The second is more forceful, enough so that it actually jostles the bedframe slightly. The third is /loud, the slap of skin against skin and Marks bedside table actually being affected. 

Jeno seemingly broke by the second thrust as he stopped making noise and was just stuck in a silent scream, though once Mark began to fuck into Jeno with a steady pace and even force, Jeno couldnt stop the sounds from coming. 

Mark felt more than just dizzy getting to use Jeno like this. Using his hands as a leverage point, pulling on his hands as he ruts forward for the deepest possible thrust. One that makes Jeno feel like hes on the edge of no return and that Mark gets to marvel at because for a first timer, Jeno is exceptionally unbreakable.

If Mark were anymore insane, he would test that theory, but he really is a good man, and he knows better.

Its then that Mark lets go of Jenos hands and leans forward, gripping Jenos waist and pressing him firmly into the mattress so Mark can drill down into the boy. Jenos back raises from the bed and Mark can tell theres a scream from /hell thats threatening to shatter humanity if he were to let it go. 

Suddenly Jeno is mumbling and frantically searching for anything to claw into, "f-fuck fuck i-its right, ri-right there right fucking there its, tha-thats the spo-spot /fuck!"

While Mark is rather mesmerized by the very unrealistic yet very real aggressive bulge he creates in Jenos gut, he realizes that he just found the perfect angle to brush right up against or even pound /into Jenos prostate.

Whichever it is, its turning Jeno absolutely feral as well as allowing tears to start brimming at his eyes. Mark slows but only a little bit to allow Jeno a bit of breathing room and to let  his body catch up with the sensations. 

He fucks into Jeno at a more moderate speed, something the two of them can handle and really feel everything instead of just jostling their brains to mush. 

"H-hyung, hyuung please pleaseplease" Jeno starts to plead. 

"What d-do you need, baby?"

Jeno just shakes his head profusely and Marks convinced that Jeno may never come back the same after this, just a broken machine who cant think of anything other than 'hyung' 'dont' and 'please'.

Jeno finally manages to grip into the pillow he was once laying on and that seems to bring him a little bit of sanity as he sobs out, "please do-dont stop i-im close, im r-right ahhnn~"

Mark doesnt dare stop, not just for Jeno but for himself he nearly feels like he might not ever be able to stop. 

Just then Mark feels Jeno begin to tense and release around him and his actions are getting frantic again, that is until one of Jenos hands comes to grip the base of his cock, not moving but gripping /hard. 

The sensation makes Marks hips stutter as Jeno tightens up and threatens to milk Mark for all his absolutely worth in this world. 

Jeno doesnt hold back nor does he announce anything, within a few more thrusts his back arches incredibly high from the bed and cum pools out of him, slightly streaking up his tummy and chest. 

Mark isnt typically such an easy man but its the Jeno affect; watching an angel reach peak ecstasy could make anyone cum on command. 

With the way Jeno twitches and tightens around Mark it only takes him another second before he's absolutely and unexpectedly gone, pouring everything he has and is right into Jeno. 

The high feels nearly impossible to come down from, Jeno having gone completely silent upon his release. And all Mark could bring himself to do is rest his forehead on Jenos tummy where Jeno tangles his clean fingers in Marks hair mindlessly. 

Mark finally regains some sort of conciseness, just enough to sit up and take a look at his counterpart whos staring at him with the most lopsided smile a human could posses.

"Welcome back t-to earth." Jeno giggles. 

Mark chuckles, "How the hell are you holding up better than me?"

"Am I? I'm pretty sure i-im seeing double." 

The elder moves up the span of Jenos body, cum and other fluids be damned so long as he can reach Jenos lips with his. 

Its a soft, languid kiss that doesnt transcend into anything hastier than that. Jeno is still pretty sloppy and timid but its endearing and sweet all the same. 

In the middle of Mark trying to catch Jenos lips again, the younger starts to chuckle sourly. 

"Whats wrong?" 

Jeno frowns, "My arm stuck to my stomach..." 

The two laugh together at the rather unfortunate circumstance. 

"I guess we are a bit of a disaster. Do you want to take a bath or a shower? I can start the water for you." Mark offers. 

Jeno pulls his lips to the side before shrinking into himself and that swearing, begging, kiss taking brave boy Mark knew is far gone. 

"Do you uh... think that we could..."

Mark chuckles, "Like I told you, you can ask me anything."

Jeno sighs, "Could we take a bath together?"

What kind of monster would Mark be if he said no to something like that? Especially when the eyes asking so happen to be made of pure glistening bubbles and fairy dust. 

Mark makes haste of drawing a bath for the two of them, just some hot water to start with. Once the tub is full he goes to collect his partner, picking Jeno up in his arms then setting him down gently in the water. 

Mark slips in behind Jeno, already using a bar of soap to clean up his abdomen, his chest, his arms and under arms, and even helps take special care of Jenos swollen hole. He washes Jenos hair, massaging the suds into his scalp before using a cup to pour water over his head to get it all rinsed out. 

It wasn't supposed to go this way, Mark really was just trying to be helpful, but Jeno got handsy and quite literally /mouthy. Kissing Marks chin, his jawline, his cheek before once more locking lips with the elder.

Jeno grabbed /Mark first, shockingly enough, stroking him under the water, and of course Mark wasn't about to not return the favor. Both of them stayed lip locked huffing against one another as the water sloshed quietly and they worked each other over. Jeno reaching an orgasm first and Mark following not too far behind. 

Once Mark drained the bath he helped Jeno into some sleep clothes and ushered the younger boy into his bed while Mark took a little longer as to clean up around the room and put everything away. 

He wasn't expecting Jeno to be up any longer than he had been so upon Mark finally slipping into bed he wasn't surprised to find an already snoozing Jeno, which he gently wrapped his arms around and pulled close to his chest before finally tuckering out for the second time that night. 

Mark is aware that their relationship is... highly, unethical. But, it stays behind closed doors and far away from the public eye. So long as he can help it, anyway, as nothing ever stopped Jeno from ripping Mark away to a public restroom to blow him, or try to tease him in any social setting. 

He's highly aware that hes created a bit of a monster. Not for lack of trying though, as Mark did his best to keep his 'one time only' rule. But after about a week of Jeno doing his own 'research' and really cranking the innocents card up to eleven, he fucking folded —  that is to say folded Jeno in half to teach him ... some kind of lesson? He doesn't know, Mark lost count after lesson seven.

Yeah, there will always be a part of Mark that feels bad that he, in a way, corrupted one of his closest friends at just thirteen. However, he likes to look at it this way; if it wasn't gonna be him, then who?