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in sickness and in health

Summary:

You know what they say: Keep your enemies close and if they’re an omega, keep them closer. (No one has said that.)

Baek Saheon goes through his heat in close proximity to Kim Soleum—who doesn’t come from a world with secondary genders. Fortunately, Kim Soleum is a gracious and understanding man.

Notes:

y'all GSGW has me in a chokehold

(See the end of the work for more notes.)

Work Text:

Baek Saheon has not been out of his room in a while.

Kim Soleum does not remember the exact number of days he has not seen Baek Saheon for but it is long enough that he has started to notice. None of the communal items in their apartment have been touched and neither has he seen Baek Saheon in their shared spaces in a while. Whenever Kim Soleum returns home to their apartment, Baek Soleum’s polished shoes greet him at the entrance, neatly lined up and untouched.

When he first started to notice Baek Saheon’s absence, Kim Soleum’s first thought was that a Darkness, one of those types that follow you home, had finally gotten Baek Saheon and that the Dark Exploration Records wiki had got it wrong: maybe Baek Saheon would not live to become Section Chief Viper after all.

However, after some clever observation on Kim Soleum’s part, aka he heard muffled noises from within Baek Saheon’s room, he deduced that Baek Saheon had not disappeared. He had just been holed up in his room all this time. The next question Kim Soleum asks himself is why? Was he ill? Or worse, contaminated? At what point did Kim Soleum go to check on Baek Saheon himself? Was he even still alive—well, yes, that was a very loud thump he just heard from Baek Saheon’s bedroom so someone must be in there and moving around.

Kim Soleum sits on the sofa in the living room and thinks about the answers to all his questions.

And then decides that it is none of his business.

With less of Baek Saheon around, Kim Soleum actually feels more relaxed. There is no need to put up that front of a crazy dopamine addict and come up with crazy things to say to Baek Saheon to keep him in line. He can just sit on the sofa and watch whatever he wants.

And so he does.

It is peaceful in the apartment.

 —

The next day, Baek Saheon still has not emerged from his bedroom.

Kim Soleum walks up to his bedroom door and stands outside it for a moment, thinking, his hand slightly raised. It is silent inside, almost ominously so, and Kim Soleum thinks about turning the doorknob and peeking inside just to check that his housemate is still alive and well.

Then, he hears a faint noise from behind the closed door. The squeaking of springs, a creaking of wood, and the barest hint of a sigh? A whine? A whimper?

He drops his hand. Maybe Baek Saheon was just sleeping. Fitfully. God knows Kim Soleum can relate to that after going through all those terrifyingly scary ghost stories. Some days after the particularly awful ones, Kim Soleum can’t even sleep, tossing and turning and seeing those nightmare images behind his closed eyelids.

Maybe Baek Saheon was secretly someone like him, someone unwillingly pushed into the world of ghost stories. Not literally like him who came from a whole other world, but Baek Saheon had been a clueless recruit in his batch after all. Maybe life in Daydream Inc was as horrible for him as it was for Kim Soleum.

Feeling an unusual amount of sympathy for Baek Saheon, Kim Soleum drops his hand and steps away from the door. With Baek Saheon’s stubborn and prideful personality, Kim Soleum would not be doing him any favours barging in at his most vulnerable. If Baek Saheon needed to take some time off to cry or let it all out or whatever a person like him needed to do, Kim Soleum would let him be.

He turns away from the door and heads out to clock in for his day at Daydream Inc. As he does, something tickles his nose, making him feel like he has to sneeze. He frowns and rubs his nose. A scent in the air? Like an unidentifiable flower in full bloom, somewhere far away.

 —

When Kim Soleum got dropped into the world of Dark Exploration Records, he knew about the ghost stories. He knew about Daydream Inc and the Supernatural Disaster Management Bureau and the Church of the Luminous Unknown. He even knew about past records in the wiki that had been deleted and written over by new contributors, old lore that new readers would not know about. He had read all the entries in the wiki numerous times, so many times that he can even remember some by heart. He had even contributed to some himself.

What Kim Soleum did not know is that in the world of Dark Exploration Records, something called secondary genders was a thing. In this world, besides being born a certain primary gender, people came into their secondary gender at a later age, often around puberty, presenting as either an alpha, omega, or beta. Everyone in this world was one of those three designations without exception… except for Kim Soleum.

When he had been spat out into this world he had only read about as a wiki, he had no idea what everyone was talking about until he finally found the time to look it up. It was a bizarrely foreign concept to him and as far as he could tell, being transported here had not magically granted him a secondary gender, which he has to be grateful for because everything he has read about it sounds like a pain. No, Kim Soleum was grateful that with his lack of scent and a nose that could smell nothing, he would not be dragged into any of this nonsense. When others asked, he simply claimed to be a beta, happy to stay out of the entanglements between alphas and omegas.

In his team, Assistant Manager Eun Haje was an alpha and Supervisor Park Minseong was an omega. Section Chief Lee Jaheon was a… lizard as far as Kim Soleum knows, but everyone claims that a man with his presence and strength had to be an alpha and a dominant one at that. There have been made-up rumours about Kim Soleum being an alpha too as he racks up points like nobody’s business, but he adamantly sticks to claiming his betaness.

Eun Haje and Park Minseong take turns disappearing for a couple of days at a time, according to their routine ruts and heats (the lizard never takes a day off), and Kim Soleum has come to learn when these times are fast approaching. The way Eun Haje’s movements get a little sharper, her words and actions more aggressive, her teeth baring in a snarl at times and revealing sharp canines. Or the way Park Minseong grows a little more sluggish and distracted, his hand coming up to rub the back of his neck self-consciously.

Kim Soleum admits to being curious about secondary genders, as most normal people would be when faced with a foreign concept, and in the safety in his bedroom, he had looked up what exactly happened during an alpha’s ruts and an omega’s heats. Safe to say, there is an entire, thriving media industry built upon something so closely tied to biological, uncontrollable sexual urges, and Kim Soleum had come away from that bit of research more than a little flushed. (He had left Braun in the living room during that time, tucked into a makeshift bed to appease him.)

On the third—or fourth?—day of his housemate’s disappearance, it finally hits him that he had never asked about Baek Saheon’s secondary gender. He could not smell it and it was never brought up between them so he never figured it out. Maybe he could ask Go Youngeun about it, but it would be an awkward question to be asking.

It was likely that Baek Saheon was holed up because of a rut… or a heat. Privately, Kim Soleum cannot imagine that someone who would grow into the vicious Section Chief Viper of DER would be an omega. He seemed more likely to use some ultra alpha pheromones to bend others to his will.

But then again, his initial impression of Baek Saheon was that he was a lot… cuter than he first envisioned the future Section Chief Viper. Soft and fluffy brown hair, bright green eyes, and a warm, gentle smile that caught him off guard the first time he saw him in the train. Sure, he had broken his façade not long after that, but when Baek Saheon was not talking, he still looked like a sweet, harmless young man to anyone who did not know him.

For the briefest moment, Kim Soleum considers the possibility of Baek Saheon being an omega and his imagination goes wild. That image of Baek Saheon as Kim Soleum first saw him, sweet, cute, harmless-looking, was overlayed with a video he had watched late at night, which featured an attractive omega bouncing on a thick dildo, frantically fucking himself back on it through his heat, moaning in wanton pleasure as he rocked his hips back and forth. Kim Soleum thinks, without meaning to, of Baek Saheon with his bare thighs spread, whimpering as he slid a hand between them, angling the dildo to drive even deeper into him with every desperate thrust. He would be so slick that it would not even take much for all of that to fit within him, shifting his hips back and forth like it was not enough, like he wanted even more inside him—

Kim Soleum reaches the front door of his apartment and realises that it would fucking awkward to go in now. He does not know which would be worse—if Baek Saheon was still holed up in his room doing god knows what or if he was out wandering through their shared apartment. Kim Soleum does not think he would be able to look him in the face.

So, he turns around and does the smart thing. He goes for dinner outside, he does some grocery shopping, he buys energy drinks and supplements that he is sure Baek Saheon steals some of when he thinks Kim Soleum won’t notice, and then he goes home, his heart calmer.

When Kim Soleum opens the front door, he is not sure who looks more shocked, Baek Saheon or him. His housemate has finally emerged from his bedroom after days of seclusion, holding a balled up pile of what looks to be all his bedsheets, duvet, and a whole lot of towels in his arms. He looks bedraggled, with bags under his single, swollen eye, his fluffy, brown hair mussed up every way. He is wearing only a shirt and boxers and Kim Soleum very quickly averts his eyes from the sight of those bare thighs.

Baek Saheon looks like a deer caught in the headlights ready to bolt, his single eye darting back and forth like he is looking for an escape route in this apartment. His missing eye is uncovered, the eyepatch he has taken to wearing nowhere in sight, soft, brown locks falling over the closed eye and hiding it from sight instead.

Kim Soleum scrambles for something to say, anything, to keep up his appearance of the crazy psychopath he has been scaring Baek Saheon into submission with, but his nose catches the familar scent of fresh flowers but stronger now, like a meadow in spring, gentle and soft and sunny, and what comes out is, “Trying out a new fabric softener?”

Baek Saheon, interestingly enough, turns bright crimson in the face. Without a word, he all but flees into their laundry room, sheets and duvet trailing behind him.

Kim Soleum heads into his bedroom in a few quick strides and shuts himself in it. He still does not know what Baek Saheon’s secondary gender is but maybe, maybe, he can guess.

 —

He thinks Baek Saheon would be so wet if he thrusts his fingers just right into him, pulling out the most delicious noises from his throat, soft fluttery moans, cute pleading mewls, his already slick thighs tightening around Kim Soleum’s hand.

“Please…” Baek Saheon begs, his eye cast downwards, still holding onto that last bit of defiance even as Kim Soleum works him open, reaching deep into him with two fingers, and then three.

“Please what?” Kim Soleum asks, grinding his fingertips into Baek Saheon and marvelling at the way he shudders around his fingers like he is about to spill all over them.

“Please… sir?” Baek Saheon whimpers as Kim Soleum slides a third finger into him, stretching him even wider, preparing him to take something even thicker. His hips jerk, trying to fuck himself back on Kim Soleum’s fingers, chasing that pleasure.

Kim Soleum wants to kiss him so bad. He wants to take Baek Saheon apart and put him back together only to wreck him into pieces under him until all he can do is sob and shiver and feel how Kim Soleum feels in him. He coaxes Baek Saheon into his lap, cajoling and bullying him until he is straddling him on his knees, positioned right over Kim Soleum’s erect cock.

“Please what?” Kim Soleum asks again, even though he can feel how hard he is and how wet Baek Saheon is, with the head of his cock pressed right up against omega’s twitching entrance.

Baek Saheon shoves his hips downwards, trying to take what he wants by force, only to be stopped by Kim Soleum’s firm hands on his waist, his fingers digging into his skin to stop him right there. Baek Saheon whines and squirms in his grip, trying to sit himself down on his cock, but it is no use.

Kim Soleum leans in, his lips brushing Baek Saheon’s ear as he murmurs, “If you try that again, I’ll leave you to get off with a toy instead—if you’re lucky. What do you want from me? Use your words, Baek Saheon.”

He does not miss how Baek Saheon’s entrance clenches against the head of his cock when he says that. Nor does he miss the blush rising on Baek Saheon’s cheeks. With the self-control of a monk, he sits and waits, holding Baek Saheon’s gaze expectantly.

Baek Saheon trembles and he rubs himself a little on Kim Soleum’s cock as if to soothe himself, or to remind himself of what he wants.

“Please…” he begs, his voice low and embarrassed. “Please put your cock in me, sir.”

Without warning, Kim Soleum shoves Baek Saheon down onto what he asks for so prettily and Baek Saheon screams.

Kim Soleum wakes up.

 —

It is his turn to use the washing machine the next day, but Kim Soleum thinks he is more subtle than Baek Saheon. Not that the other man would confront him about something as mundane as laundry anyway.

As he squats on the floor and stares at his sheets spinning through the glass window, Kim Soleum thinks about how fucked up he is. To be dreaming! Of something like that! He should have never watched those omega heat videos even if out of curiosity. He can never look Baek Saheon in the face now and then the other man, as astute as he is, would figure out something was up and use it against Kim Soleum.

Absently, Kim Soleum wonders if there was some way to wipe his memories. Or scrub his imagination.

He remembers that Baek Saheon had a nifty little toy—not that kind of toy, get your head out of the gutter, Kim Soleum—that could hypnotise people but he would rather not mess around with something like that in his own head.

His only saving grace is that Baek Saheon did not know about the role he had taken on in Kim Soleum’s dream because he is sure that would have him running screaming from him and filing for harassment charges against him with HR. No, for now, all Kim Soleum had to do was pretend that nothing had happened and all would be well.

 —

Days go by, turning into weeks then months. Kim Soleum clears Darknesses at record speed and they send him into increasingly dangerous ones. He barely has time to think, let alone dream, and when he does, his dreams are so full of fears that they wake him up in the middle of the night, gasping and on the verge of tears.

He wants to go home. He needs to keep that end in sight.

As all that time passes, he almost misses that Baek Saheon has gone missing again. His shoes are at the front door. His bedroom door, closed. Kim Soleum gives it a wide berth. Now that he is hyperaware of what might be happening behind it, he hears the occasional sound of the bed rocking, the sheets rustling, and a soft wail, all muffled through the door. Kim Soleum shuts himself in his bedroom and turns up the volume on a cartoon he puts on, trying not to think.

Something bangs on the wall right beside him and he thinks he hears a stifled sob.

Kim Soleum reaches for his phone and starts looking for noise-cancelling headphones.

 —

Their apartment smells like a field of flowers now, soft and sweet, almost cloyingly overripe in a summer heat. Kim Soleum’s head feels dizzy when he walks to the kitchen to get a glass of water. He wonders if Baek Saheon has enough to eat and drink in his bedroom. When did he move all those supplies into his bedroom anyway? As Kim Soleum goes to the sink to rinse his glass, his foot bumps into something and he glances down.

A cardboard delivery box sits on the floor next to his foot, the type that looks like it comes from the supermarket. If Kim Soleum was the betting sort, he would bet he knew the contents of the box and that it was most certainly Baek Saheon’s, who would come out to retrieve it at some point of time. With panic rising in him, Kim Soleum glances up at his housemate’s closed bedroom door. He abandons his glass by the sink, already making a beeline for his bedroom when the door to Baek Saheon’s bedroom slams open.

A dishevelled Baek Saheon stands in the doorway, clutching the doorframe like a lifeline. He is wearing a shirt, and only a shirt, and Kim Soleum cannot help but stare at his exposed thighs, glistening with sweat and… other liquids. His scent is overpowering now with the door open and even as someone who does not belong in this strange world, Kim Soleum can smell Baek Saheon. There is nothing soft or sweet about the flowers that make up his scent now, relentlessly overpowering and demanding, almost sending Kim Soleum to his knees crawling towards Baek Saheon for a taste of what is between his legs.

Kim Soleum’s legs buckle and he braces himself against the tabletop, stubbornly staying there with sheer willpower as he turns his eyes towards Baek Saheon and feigns cool nonchalance.

“What are you doing here?” Baek Saheon demands flatly, audibly tired, his voice strained. Looking at the way his hand trembles on the doorframe, he is barely holding himself up.

“I live here.”

Baek Saheon’s eye narrows. “It’s the afternoon. Don’t you have work or something?”

“It’s the weekend. Don’t you have a calendar or something?” Kim Soleum retorts.

Baek Saheon rolls his eye but does not say a thing. He seems like he has exhausted his energy speaking and is now trying to tell Kim Soleum to get lost with his gaze alone.

Kim Soleum could… but he is sure that Baek Saheon will remember it after his heat if Kim Soleum backs down here. He cannot let Baek Saheon think he has the upper hand in any way or else it is his life on the line one day if he ends up in a Darkness with him. So instead, he stays. He retrieves his glass and fills it with water. Then, he decides that he wants something from the fridge and moves towards it, never leaving the narrow kitchen area.

Baek Saheon hesitates at his bedroom door—Kim Soleum sees it out of the corner of his eye. He takes a step forward and makes a miserable noise in his throat, quietly stifled out of existence as he hobbles towards the kitchen where Kim Soleum is. Subtly, Kim Soleum leaves a path for him to move by, wide enough that he doesn’t even have to brush by him. Baek Saheon looks like he is having a hard enough time and despite all his caution around him, Kim Soleum doesn’t actually want him to suffer.

Quickly, Baek Saheon hefts the box in his hands and makes to scuttle off, getting away from Kim Soleum as fast as he can. In his haste, he trips over his own foot and stumbles sideways, the box throwing him off balance, and Kim Soleum catches him by the waist before he falls.

“Careful,” Kim Soleum murmurs as he steadies Baek Saheon then immediately drops his hands. He had been trying not to look at Baek Saheon, especially not at his lower half, but he had done so instinctively—and accidentally confirmed that Baek Saheon was not wearing anything underneath his shirt. If he were to slip his hand between his thighs now…

Baek Saheon flinches away from him and power-walks back to his bedroom, the box gripped tight in his arms, like a prey animal sensing and avoiding danger. Good instincts, Baek Saheon. Kim Soleum nods to himself. Excellent survival instincts. That is probably how he gets by in Darknesses.

After Baek Saheon slams the door shut behind him, Kim Soleum returns to his room, lies down, and tries not to think about anything at all.

 —

There is a weight between his legs, hands tugging his pants and underwear down, somewhere between careful and hurried. Something wet and warm engulfs his cock, a soft tongue lapping at him kittenishly, more urgent and clumsy than experienced. Kim Soleum groans and opens his eyes in the dark, praying that this is not some kind of new Darkness, one of the dodgy ones that had been modded out of the wiki by a firm hand.

He looks down and sees soft, brown hair illuminated by the moonlight and Baek Saheon lying between his legs, his mouth on his cock as he sucks on the gradually hardening length. Kim Soleum feels languid, almost lazy in his half-waking state as he runs his eyes over the length of Baek Saheon’s body. He is still wearing the shirt he saw him in this afternoon, the hem now shucked up around his hand between his thighs, frantically working himself open on his fingers.

Kim Soleum brushes back a few locks of Baek Saheon’s hair and murmurs, “What is this about?”

A single green eye looks up at him, glittering and hazy, as Baek Saheon pulls his mouth off him, his lips glistening red as he confirms, “You’re a beta, aren’t you?”

Kim Soleum makes a non-committal sound in his throat.

“I don’t care as long as this thing works,” Baek Saheon mutters, laving at Kim Soleum’s cock with his tongue and shoving it in and out of his mouth. There is zero finesse about the way he does it, working Kim Soleum into hardness methodically by relying on his body’s natural reaction to stimulus.

“Thing?” Kim Soleum asks softly, a little offended, and Baek Saheon freezes.

Stubbornly, he does not respond to that, taking all of Kim Soleum into his mouth as if to avoid answering.

Kim Soleum tugs lightly on Baek Saheon’s hair, his mind whirring as he says, “If you want me to fuck you, you should ask nicely, Saheon-ah.”

Baek Saheon stays silent, running his tongue over the tip of Kim Soleum’s cock in his mouth. The air fills with the sound of quiet squelching as Baek Saheon fingers himself and Kim Soleum tries to catch a glimpse of that, absently wondering how many fingers he is taking. Lying on his stomach on the bed, Baek Saheon moans softly around Kim Soleum’s cock, his hand speeding up between his thighs, and Kim Soleum wonders if Baek Saheon will come just like that without Kim Soleum doing anything. How long was he at it while Kim Soleum was asleep?

Sitting up from the bed, Kim Soleum’s hands find Baek Saheon’s wrists in the dark and seizes them, ripping his fingers out of him. He hears Baek Saheon cry out, startled, but he does not give him the chance to say anything more as he cups the back of Baek Saheon’s head and shoves his mouth down on him until the head of his cock meets the back of his throat.

Baek Saheon gags and Kim Soleum eases up, not actually wanting to hurt him, giving him a moment to breathe before he grabs him by the hair and thrusts into his mouth at a punishing pace. Baek Saheon squirms like a fish in his grip, trying to break free, but Kim Soleum keeps a firm hold of him, refusing to let him get away just like that.

Baek Saheon heaves, saliva trickling out from the corners of his mouth, unable to do anything more than take it with his lips stretched out red and pretty around Kim Soleum’s cock, and his throat bobbing, desperately, desperately trying to adjust to the relentless pace Kim Soleum keeps up.

Tears well up in Baek Saheon’s eye, his body limp over Kim Soleum’s legs. He doesn’t even bring his hand back in between his legs even though Kim Soleum has freed it up, but Kim Soleum sees him rub his thighs together, rutting his crotch into the bedsheets under him. All of a sudden, Baek Saheon’s body goes tense, his feet digging into the bed, and then all resistance goes out of him.

Kim Soleum finally pauses, bringing his hand down to Baek Saheon’s chin and wiping his thumb over his stretched lips and the drool gathered there.

“Did that feel good for you?” Kim Soleum murmurs. “So good that you came just from having me in your mouth?”

Baek Saheon’s eye is glassy, his cheek resting on Kim Soleum’s thigh as he shudders violently against him, still coming down from his orgasm. From what Kim Soleum knows of omegas in heat, this is only just the start of what Baek Saheon has got coming for him. He may have climaxed just from that but Kim Soleum’s cock is still hard and throbbing in his mouth. Kim Soleum does not have an alpha’s crazy biological stamina to keep up with an omega in heat but he can try to fulfil Baek Saheon as much as he wants.

Kim Soleum pets Baek Saheon’s hair lovingly, bending over to look him in the eye as he instructs, “Turn around and get on your hands and knees for me.”

It takes Baek Saheon a moment to come back to himself and Kim Soleum wonders briefly if he would even listen to him. But then, slowly, Baek Saheon crawls up from where he is lying limply over Kim Soleum’s lap and turns around on his hands and knees. He is dripping, his cute little cock spent and soft after coming all over the sheets, hanging downwards between his legs. Kim Soleum reaches out and runs his hands down his back and the seam of his ass, spreading him wide with his thumbs and prodding at Baek Saheon’s leaking hole. After all that violent fingering he had been doing to himself, he seems stretched and prepped enough, and Kim Soleum is at his own limit after everything Baek Saheon had been doing to him.

Baek Saheon waits for him, presenting himself like that, legs parted just enough for Kim Soleum to fit himself there. When Kim Soleum does not move fast enough, Baek Saheon lowers his chest to the bed and cants his hips up invitingly, spreading his legs even more as he whines low in his chest. The sight and sound goes straight to Kim Soleum’s cock, still so wet with Baek Saheon’s saliva, and he moves to comply, kneeling right between Baek Saheon’s legs.

Just pushing the tip of his cock past Baek Saheon’s tight entrance has the both of them moaning and Kim Soleum keeps a solid grip on the omega’s hips as he keeps going, ramming it in all the way forcefully and meeting no resistance until he bottoms out. Baek Saheon keens, rocking himself back on him, and Kim Soleum wastes no time, timing his thrusts to Baek Saheon’s movements then fucking him harder, faster, deeper until he has Baek Saheon pressed down into the bed under him, unable to do anything more than clutch at the sheets.

The friction against his cock feels so good, deliciously warm and slick and so inviting. Baek Saheon is tight all around him, clenching down every time he slams into him, and through the absurd pleasure, Kim Soleum wonders if Baek Saheon does this regularly with other people. Does he crawl into their bed and sit on their cock, fucking himself on it with needy mewls? Or does he present himself the same way he does with Kim Soleum now, ass up and legs spread, slick dripping out of his hole as he begs to be filled?

Kim Soleum doesn’t know, his mind racing with images of Baek Saheon in all sorts of compromising poses, overlaid with what he is seeing with his actual eyes right now. Heat builds up in his groin, in the cock buried deep in Baek Saheon, and he groans, making to pull out before he comes, only to have Baek Saheon whine, clenching down on him and backing up against him hurriedly to keep it in him.

“Don’t,” he mumbles, his face buried in the sheets.

“Don’t?” Kim Soleum gasps.

“Don’t take it out. Just… just do it in me,” he begs, his voice so soft that Kim Soleum has to strain to hear him. “Please?”

Kim Soleum doesn’t know if he obeys Baek Saheon’s desperate plea or if it is just too late for him but he stops thinking about anything, every inch of him concentrating on where he is buried in Baek Saheon. He thrusts forward so hard, so deep, he ends up squashing Baek Saheon against the bed, and then he releases into him, emptying everything that has been building up into the omega and filling him with a wonderful warmth.

Baek Saheon moans under him, his voice rising in pure pleasure, and the scent that had thickened and filled Kim Soleum’s room blooms into something even deeper, raising Kim Soleum’s heart rate even more. There is almost something heartwrenchingly nostalgic about the way Baek Saheon’s scent smells, soft and gentle florals that makes Kim Soleum think of home, of a place he wants to go back to, of a person he wants to stay with forever and protect, and even though he is spent, Kim Soleum cannot stop rutting mindlessly into Baek Saheon, his cock pistoning in and out of him like he is trying to fill him up again.

His singleminded goal now is to keep his omega sated and happy, to fulfil his every need, and if that means fucking him through the night, or even for days, then Kim Soleum will do just that. Maybe he would even get Baek Saheon pregnant by the end of his heat after filling him with so much of his seed that there was no way it would not take in him and bear fruit. Wouldn’t Baek Saheon like that?

Wouldn’t Kim Soleum like that?

 —

Eventually, morning breaks and Kim Soleum wakes up sticky and disoriented, with a warm body bundled into his arms. His body aches as if he had just done a full body workout and when he shifts, a squelching noise fills the air, coming from his lower half.

Baek Saheon.

Kim Soleum had fallen asleep hugging him to his chest, keeping him close, so close that his cock is still buried in him. Very slowly, Kim Soleum disentangles himself from Baek Saheon’s warm body, shuddering at the loss of that tightness around him keeping his cock snug. Come dribbles out of Baek Saheon’s hole, staining his already ruined bedsheets, and Kim Soleum watches it trickle down, mesmerised, struck by the sudden urge to stuff his fingers into the omega to stop the flow and keep it all in him.

Baek Saheon has not moved at all, sleeping soundly with his cheek pressed against the pillow, and in a moment of weakness, Kim Soleum gives in to that urge. However, as soon as the tip of his finger touches Baek Saheon, a hand slaps his away and Baek Saheon turns towards Kim Soleum, one irate, green eye glaring at him.

“Don’t touch me. You already did enough last night.”

Kim Soleum retracts his hand, his skin stinging from the light slap. “Don’t make it sound like it was all me. You’re the one who came onto me first.”

Baek Saheon’s eye widens and then drifts away to look at the ceiling instead. “… It’s because I saw how you looked at me.”

“When?” Kim Soleum asks, baffled.

“In the kitchen. You wanted to fuck me then, didn’t you, sir?” Baek Saheon’s eye narrows as he looks at Kim Soleum. “Don’t lie to me.”

“You let me do it.”

Baek Saheon is silent for a moment before he says, “You’re a beta and I’m on contraceptives so it’s not like anything will happen.”

No, not really a beta, Kim Soleum thinks to himself. Out loud, he says, “Is that the only reason? There are plenty of betas out there.”

“You’re here alright? I’m not about to go outside in the middle of my heat and look for just any beta to fuck!”

“So,” Kim Soleum pauses, smiling a little at him. “I’m not ‘just any beta’ then, Baek Saheon?”

Baek Saheon shoves at Kim Soleum’s shoulder and rolls over. He has a grip on the duvet, Kim Soleum’s duvet, which he wraps clumsily around himself, his movements stiff after last night’s full course of activities. With great effort, Baek Saheon gets up from the bed and hobbles away from Kim Soleum and the conversation at hand.

Kim Soleum watches him go, a faint smile tugging at his lips. How cute.

“Your heat lasts for a couple of days, doesn’t it?” he calls out to Baek Saheon’s retreating back. “Do you want to come back to my room or should I go to yours later?”

Baek Saheon slams the door behind him.

 —

In the afternoon, it is Kim Soleum’s turn to use his mouth on Baek Saheon and he sucks on his nipples, teasing the delicate nubs with his teeth and tongue until they swell up and Baek Saheon cries out at the lightest brush against them. Kim Soleum makes sure to touch them as often as he can over the day with his mouth or fingers, just to hear him make that adorable, fluttery noise of protest.

In the evening, Kim Soleum discovers that Baek Saheon can come just by having his fingers in him, which gives his poor, overworked cock a much needed break. Baek Saheon comes one, two, three, multiple times until a puddle of slick and come soaks through his sheets between his spread legs, his mouth open and mewling as his hips twitch like he is still reacting to the fingers in him even after Kim Soleum has pulled out.

At night, they are both fairly exhausted by then so Kim Soleum sits Baek Saheon down on his cock and holds him in his lap, his back to his chest and an arm wrapped around Baek Saheon’s waist. At some point of time in the dark, they had started kissing. Kim Soleum does not know if the other man initiated it or if he did but it is nice and he has a hand in Baek Saheon’s soft, fluffy hair, petting it gently. They kiss slowly, like they are discovering what it feels like to kiss each other for the first time, and Kim Soleum realises that it is the first time they are kissing, even after everything they have been doing so far.

Baek Saheon is sweet like this, nothing like the Viper he knows from the DER wiki, making soft, pleased noises in his throat as he explores Kim Soleum’s mouth with his tongue, his eyes shut with an almost innocent earnestness. Kim Soleum caresses his hair and strokes his cheek, feeling a wave of affection surge up in him. He wants to protect Baek Saheon when he is like this, at his most vulnerable.

They kiss for what feels like hours, even though Kim Soleum knows that only a couple of minutes have passed, and when they part, he almost doesn’t want to. But Baek Saheon’s neck must hurt, twisted to the side like that to kiss him deeply, so he lets him face the front again, resting his chin on Baek Saheon’s head and nuzzling his hair.

Baek Saheon rocks himself a little on Kim Soleum’s cock, back and forward, back and forward, but nothing more, seemingly content with just keeping it erect in him. He leans back against Kim Soleum’s chest and Kim Soleum feels him relax against him, his head tucked into the crook of his neck. Neither of them say much for the rest of the night and the night passes by like that.

 —

[“Roe, are you sick today?”] is the first thing Kim Soleum sees on his phone when he is finally awake to check it. It is a text in D Squad’s group chat from Park Minseong, sent five minutes past the usual time Kim Soleum shows up at the office.

Kim Soleum jumps up and then halts abruptly, not wanting to wake the sleeping omega nestled against him.

[“Sorry, not feeling too well,”] he types back quickly. [“Can I take the day off?”]

[“Yes.”]

[“Just boldly use those days off up, rookie.”]

[“Rest up and feel better soon! ^^”]

Kim Soleum sends back a sticker expressing his gratitude and exits out of the group chat. After thinking about it for a moment, he sends a direct message to Park Minseong.

[“Supervisor, can I ask a question?”]

[“Sure! What is it?”]

[“How long does an omega’s heat last if they spend it with a partner?”]

There is a brief pause before he gets a response back.

[“It’s certainly shorter than if they spend it without one and for most omegas it’s more comfortable if they spend it with someone they trust. It depends on the person but it could be anywhere from 1-3 days?”]

Kim Soleum checks his calendar. This would be the third day since Baek Saheon’s heat started, and the second day that he is spending it with Kim Soleum.

[“You know, Roe, instead of sick leave, this company does set aside days for partners of alphas or omegas to spend it with them.]

[“But you would have to list your partner as a dependant for it to count.”]

Kim Soleum shakes his head mentally. Baek Saheon in his right mind would never allow that. Kim Soleum would probably just have to burn a precious day of sick leave to keep him company instead.

[“Thank you, Supervisor. I’ll keep that in mind.”]

[“No problem at all!”]

[“And oh, Roe, congrats ^^”]

For what???

Kim Soleum puts his phone away and slides an arm back around Baek Saheon’s waist. He is sleeping soundly, not even stirring a bit as the sun’s rays filter in through the gaps in the curtains. Kim Soleum sniffs at Baek Saheon’s nape, trying to pick out any hints about his heat from there but all he smells is the same flowery scent diffused through the room.

The only way he can gauge the progression of Baek Saheon’s heat is when the omega finally wakes up properly and either tries to mount Kim Soleum or kick him out of his room. After the number of times they have done it in the past day, Kim Soleum tiredly hopes it is the latter. He swears his cock is beginning to chafe and his whole body is one big sore spot from the absurd amount of cardio he has been doing. No doubt, Baek Saheon is in even worse shape than him and Kim Soleum worries for his poor, overused hole, but at least the other guy gets to take proper days off for his heat. Kim Soleum will probably be back in a Darkness this time tomorrow.

Baek Saheon makes a soft noise in his sleep and Kim Soleum pets his head to comfort him, planting a kiss on the top of it.

“Why are you so nice to me?” he hears Baek Saheon mumble, his voice thick with sleep. The barest sliver of green peeks through his lashes as he squints suspiciously at Kim Soleum. “Not going to make me pay you back for this afterwards, are you?”

“With what? Your body?”

“Who knows with you? What if you want to fuck me every night after this even after my heat?”

Kim Soleum tightens his arm around Baek Saheon’s waist and hugs him closer. “Actually, great idea. Would you say no?”

“… What are you? Some kind of sex maniac?”

“No, that’s you.”

“I’m on my heat so that doesn’t count.”

“Hmm, so that means you would never moan, ‘Harder, sir, please, sir, that feels so good.’ if I were to fuck you off your heat?”

“NO.”

“Wanna bet?”

Baek Saheon’s eye trembles, the man thoroughly baffled. “Why do I have to bet with you?”

“Payment for spending your heat with you.”

“I didn’t ask you to do it.”

Kim Soleum raises an eyebrow. “I’m sure you did when you came into my bedroom, crawled into my bed, and started sucking me off while fingering yourself.”

“You didn’t have to go along with it.”

“I could have reported you to HR for that, but I didn’t. Aren’t you glad, Baek Saheon?” Kim Soleum smiles.

“So?” Baek Saheon says grouchily, irate at being backed into a corner. “What do you want for that?”

Kim Soleum looks at him pointedly.

“What do you want for that, sir?“ Baek Saheon says, dutifully polite.

Kim Soleum pats him on the head. “I’ll think about it.”

“Somehow, that scares me even more,” Baek Saheon mutters under his breath.

The same invisible urge that had been tugging at Kim Soleum all throughout the previous day pulls him in again and he rolls Baek Saheon onto his back, boxing him in with both arms braced on either side of him. Baek Saheon looks back sleepily at him, his hair fanned out around him on the pillow, and Kim Soleum kisses him on the lips before inching downwards, kissing his collarbone, his soft stomach, his hipbone, sliding his hands down the inside of Baek Saheon’s thighs and gently parting them. As he suspected, Baek Saheon is already dripping slick, his small omega cock risen half mast, and Kim Soleum smiles indulgently at him, affection rising in his chest.

“Still need me?”

Obediently, Baek Saheon spreads his knees a little more, opening himself up to Kim Soleum as he tilts his head to the side to avert his gaze and mumbles out a clumsy, “Please.”

“What do you want?” Kim Soleum asks, stroking Baek Saheon’s knee.

“Your… your tongue.”

“Be specific.”

Baek Saheon turns red and it is a pretty colour on him in the morning light. “Your tongue… in me. Please, sir.”

“Good boy,” Kim Soleum praises and lowers himself to the bed, licking up the slick dribbling freely from Baek Saheon’s hole.

If Kim Soleum were the calculating sort, what Baek Saheon would owe him over the course of his heat would be an astronomical debt if he counted every orgasm, every amount of pleasure, and every pleading request Baek Saheon asked of him, teary eyed and desperate as he was. Even now, as Kim Soleum works him open with his tongue, his debt would be racking up with every jerk of Baek Saheon’s hips and every pleased moan from him. His mouth would have its cost and his (poor, overworked) cock would have its cost. Not to mention that this would technically count as some kind of overtime considering his constantly interrupted sleep.

Kim Soleum leans back, massaging his sore jaw as he asks, “Hey, Baek Saheon, do you want to come?”

Baek Saheon shoots him a look that reads, “What kind of question is that?” and says, “What do you think?”

Something Kim Soleum has also noticed is that the way Baek Saheon has been speaking to him recently has been slipping back into insolent, which could affect their dynamic once Baek Saheon’s heat is over. He can’t let the omega think that he has the upper hand over him since Kim Soleum has been so nice and accommodating with him these few days. Kim Soleum had to rectify that or he would have to watch his back with him.

Self-service it is then. He would get Baek Saheon to work a little. “Use your own fingers to get you there.”

“What?” Baek Saheon looks at him, single eye wide in disbelief.

“Do you have a problem with that?”

“No, I…”

Kim Soleum sits back on his heels and braces his hands on Baek Saheon’s spread knees, his gaze still fixed on the wet mess between his thighs. “Well, go on then.”

Baek Saheon shivers. Kim Soleum had chosen the exact moment when he had been building up to a wonderful orgasm to stop and ask Baek Saheon to reach the finish line himself. With Kim Soleum still lagging behind the omega’s insatiable stamina, he could wait as long as he liked but he was sure Baek Saheon would not be able to bear it in his current state.

Sure enough, he watches Baek Saheon’s hand creep down down his stomach and slide two fingers inside himself, immediately pushing them in fully to the hilt. Kim Soleum watches carefully from the best seat in the house as Baek Saheon fucks himself with his fingers, stretching himself by scissoring them, thrusting them in and out greedily, curling his wrist to crook his fingers against his sweet spot, knowing best the way he likes it. He watches Baek Saheon’s pace speed up as he fits a third finger into himself hungrily like he wants something thicker, relishing in the stretch. With his other hand, Baek Saheon wraps his fingers around his neglected cock, giving it a few quick strokes in time to how he thrusts his fingers in himself.

Even though Kim Soleum had been determined to sit back and let Baek Saheon do all the work himself, the omega is irresistible like this. Kim Soleum finds himself leaning forward and reaching out towards him. Between all the fingers Baek Saheon is already taking up the ass, Kim Soleum pushes his own middle finger in with them, forcing an even wider stretch and disrupting the steady pace with which Baek Saheon was fingering himself.

Nnn, sir, what are you—”

He knows where Baek Saheon likes it the best too after an entire evening of using his fingers on him and with this expert knowledge, Kim Soleum plays and prods and pushes at that much stimulated spot in him, milking his prostrate relentlessly as Baek Saheon spasms all around him, his rhythm thrown into disarray.

“Aah? Please~

“Keep going, Baek Saheon. Don’t stop moving your fingers.”

Baek Saheon sobs a little and Kim Soleum feels his trembling fingers thrust in and out, wedged in tightly beside his finger.

“Help, sir… It’s too much…”

Kim Soleum looms over Baek Saheon, his hand braced on his knee. “Is it? You’ve probably taken more than this though, haven’t you?”

Baek Saheon shakes his head tearfully, his jaw clenched and his gaze hazy and unfocused.

Kim Soleum fingerfucks him ruthlessly, forcing Baek Saheon’s fingers along with his. “I know about the toys you hide under your bed. Surely there’s something in there you like taking the best, isn’t there? The thickest and biggest one you could find.” He crooks his finger in Baek Saheon, rubbing unceasing circles into his sweet spot indulgently as he murmurs, “How about we go look for it together, Saheon-ah? If we find it, I’ll use it on you together with my cock. You’d like that, wouldn’t you? Both of us fit snugly inside you while you’re all stretched out around us?”

Baek Saheon comes, almost violently, his head thrown back against the pillow, his mouth opening in a sweetly wrecked moan, loud enough to pierce the walls. His come splatters Kim Soleum’s chest, slick oozing thickly out of him, his legs wracked with shivers which pass from Baek Saheon to Kim Soleum where their bodies touch.

Baek Saheon is beautiful like this and Kim Soleum crawls back up his body to capture his lips in an open-mouthed kiss, hungrily pushing into Baek Saheon‘s mouth and swallowing up every moan he makes as he rides out his orgasm. Arms wrap around his shoulders, clumsy and trembling as Baek Saheon hangs onto him, tugging him down on him even more. Kim Soleum licks his way into Baek Saheon’s mouth greedily, tasting all of him, kissing him hard until Baek Saheon is gasping for breath under him.

Then, Kim Soleum pulls back and throws Baek Saheon’s legs over his shoulders, folding him in half as he lines his erect cock up with Baek Saheon’s fluttering, loosened hole.

“Ah, sir, it’s too soon—” Baek Saheon hiccups brokenly, still catching his breath from the deep kiss.

Kim Soleum thrusts into him, burying himself all the way in, and Baek Saheon wails, writhing under him, his nails scratching up his back. Still, Kim Soleum does not let up, quickening his pace until his hips are slapping against the back of Baek Saheon’s thighs, rapid and rhythmic.

Baek Saheon whimpers and mewls, unable to do anything more than just take it in the position Kim Soleum holds him in, still sensitive from his very recent and violent orgasm. He cries out soft pleas for Kim Soleum to slow down, to be gentle, to go easy on him, but it falls on deaf ears as Kim Soleum chases his own pleasure, lost in the sensation of how warm, how wet, and how Baek Saheon is still so tight around his aching cock even after the number of times they have done it consecutively. With a groan, Kim Soleum shoves into the deepest part of Baek Saheon, dragging out a trembling cry from him as he comes in him for the umpteenth time in these two days. He is not sure who moans louder, Baek Saheon or him, as he fills him up again but he can’t bring himself to care by this point.

Exhausted, he collapses onto Baek Saheon, not caring if he crushes him under his weight. Even if he is an omega, Baek Saheon is a sizeable man and it is not like Kim Soleum will hurt him just by flopping onto him.

As Kim Soleum’s eyes slide shut drowsily, he thinks he feels the faintest, lightest brush of a hesitant kiss against his temple.

 —

He thinks Baek Saheon’s heat must be almost over. He doesn’t smell the flowers as strongly in their apartment and Baek Saheon has been responding more coherently instead of just whining and whimpering and trying to jump on his dick.

And yet, here they are, freshly out of the shower together, and Kim Soleum has Baek Saheon bent over the dining table, his pants and underwear shoved down to the floor as he takes him from behind. Every thrust sends Baek Saheon’s cock rubbing against the surface of the table, smudging his come all over it, which can’t be hygienic given that they eat at this table, but in this moment neither of them seem to care.

“Deeper, sir, deeper please, I’m almost—” Baek Saheon cuts himself off with a high-pitched whine that Kim Soleum would have teased him about if he was not preoccupied. Baek Saheon lifts one leg off the floor, shaking his ankle clear of his tangled pants and underwear, and half-mounts the table, giving Kim Soleum more room to ram his cock into him even deeper.

Aaahh, yes, right there, it feels so good, you feel so good, Soleum—” Baek Saheon curls himself over the table, his hands gripping the side of it so hard his knuckles turn white.

Kim Soleum sees Baek Saheon grind his cock against the hard wood of the table, desperate for the friction. To help him along, Kim Soleum thrusts again and again into him, hitting that spot inside Baek Saheon that has him moaning about how good Kim Soleum feels and calling him “sir” in that wrecked tone that goes straight to Kim Soleum’s cock.

They come almost simultaneously, Kim Soleum in Baek Saheon, who is so full of his come by this point that it leaks out around where Kim Soleum’s cock is buried in him, and Baek Saheon all over the table, white splattering all over the hard wood. Baek Saheon collapses on the table, his body limp, and Kim Soleum collapses on him, kissing the back of his neck soothingly.

“Maybe we should have eaten on the bed instead,” Baek Saheon mumbles tiredly. Now they have to clean the table, in addition to the mounds of soiled bedsheets awaiting them.

“You’re the one who wanted a change of pace,” Kim Soleum reminds him, speaking the words against his nape.

Baek Saheon shivers. “I was beginning to feel gross in that bed.”

“We could have used mine.”

“Your bed’s gross too.”

“So fussy. You’re the one who made a mess of them.”

Baek Saheon looks back at him indignantly. “Hey, you were there too.”

“Hey?”

“… You were there too, sir.”

“Ah, that’s where you’re wrong.” Kim Soleum smiles and slips his fingers into Baek Saheon’s hole all too easily, nicely lubricated and loosened up from all their activities. “All the mess I’ve made is in here.”

Baek Saheon falls silent and Kim Soleum can see how red his face gets. He even tightens instinctively around Kim Soleum’s fingers like he is expecting something from them and Kim Soleum plays with his sweet spot to indulge him. Instantly, he is rewarded for that as a full-body shudder wracks Baek Saheon and fresh slick drenches Kim Soleum’s hand.

“How cute.” Kim Soleum continues kissing the back of Baek Saheon’s neck, smiling against the heated skin under his lips.

 —

Eventually, all things have to come to an end and the same applies to Baek Saheon’s heat. Truthfully, Kim Soleum does not know who is more grateful that Baek Saheon has stopped trying to sit on his dick. He feels ready to pass out and Baek Saheon has already passed out several times. They bundle up all their soiled bedsheets and clothes, dumping them all in the laundry with extra detergent. Baek Saheon quietly douses the dining table in disinfectant, wiping it down at least twice. Kim Soleum cannot bear to retrieve the pink rabbit plush from where it had been camping out in the living room for the past few days while he is still airing out his room and he makes a mental note to apologise to Braun properly for the negligence.

Baek Saheon and him barely talk to each other during the clean up other than to coordinate around each other. The other man will not look at him at all and Kim Soleum feels awkward himself whenever he looks at Baek Saheon and remembers the crazy, non-stop marathon sex they had where all reason flew out the window for both of them. He is sure that if Baek Saheon was asked about anything that happened during his heat involving Kim Soleum he would never admit that it happened. Personally, Kim Soleum gets it. Yet, at the same time, Kim Soleum cannot help but think that for someone without a secondary gender, he had held out well with his normal-person stamina and biology against an omega whose singleminded purpose seemed to be to get as much come in him during his heat.

Omegas are hardy and Kim Soleum is surprised that Baek Saheon is even moving around after everything, even if he is visibly limping and wincing with each step. He never sits down and when Kim Soleum peeks into his bedroom, he sees Baek Saheon lying on his stomach on his bed, completely unmoving. Lucky for him, he can take a day or two more off to recover, but Kim Soleum inwardly groans when he thinks about having to jump into a Darkness the very next day.

As evening approaches, another thing starts to nag at Kim Soleum: Did anything change between them during Baek Saheon’s heat?

They seem to be maintaining their usual distance and Kim Soleum expects things to go back to how they were the next day, with Baek Saheon avoiding him and Kim Soleum keeping him on his toes. It seems almost a shame to return to that and Kim Soleum finds himself missing the close proximity he had shared with Baek Saheon in the recent days, the hugs and kisses and the bubbling affection he felt when he looked at him. Maybe it is for the best, Kim Soleum decides. It is not like Baek Saheon and him mean anything more to each other except for being housemates who entered the company in the same year.

That night, Kim Soleum turns in for bed and finds it strangely lonely to be by himself in the dark. Braun is back on his bedside table after Kim Soleum’s profuse apologies and a pampering session that leaves Braun’s pink fur gleaming. But his bed feels empty and Kim Soleum finds himself reaching for a warm body that is not there.

Then, the door to his bedroom creaks open ever so slowly and Kim Soleum sees a head of fluffy, brown hair and a cautious, green eye peek in. Kim Soleum slows his breathing, feigning sleep, keeping his eyes half-closed as he observes Baek Saheon creep into his bedroom. Closer and closer he gets until they are within touching distance and then—

“Scoot over. I know you’re not asleep.”

Kim Soleum opens his eyes. Baek Saheon looms over him dressed in his sleep clothes, a worn t-shirt and shorts, clutching his pillow to his side. Kim Soleum thinks about telling him off for his tone or teasing him about him jumping him again, but what he does instead is what Baek Saheon asks of him. He shifts to the side so there is space for Baek Saheon to crawl into bed with him and he watches, bemused, as the omega lays his pillow down beside his and then lies down beside Kim Soleum.

No, half on top of Kim Soleum.

“Oof,” Kim Soleum mutters as Baek Saheon knocks the wind out of him and he adjusts the both of them, rearranging their limbs and bodies until he has Baek Saheon tucked securely in his arms.

“What,” Baek Saheon mumbles, his eye not meeting Kim Soleum’s gaze. He is not wearing his eyepatch, his missing eye closed and hidden under his bangs. It makes him look so much softer than Kim Soleum knows him to be and his heart twinges in affection once more.

Kim Soleum brushes the hair back from Baek Saheon’s missing eye and says simply, “It’s more comfortable like this, isn’t it?”

Baek Saheon doesn’t respond but he relaxes into Kim Soleum’s hold, his eye drooping shut gradually. Within minutes, he is asleep, breathing softly against Kim Soleum’s chest.

“Goodnight, Baek Saheon,” Kim Soleum murmurs and brushes a kiss against his forehead.

Notes:

Rising from my grave once more to write Kim Soleum giving Baek Saheon the dicking down of his life, as he deserves. As they both deserve.

Part 3 chapters 391 onwards has me feeling like a crazy person. My solsah STOCKS

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