Archive of Our Own

It’s a normal Monday morning, until it’s not.

Class 3-A has grown into a tight-knit group over the years, numerous encounters with the ever persistent League of Villains (Paranormal Liberation Front, whatever name they were going by) bringing them together as a means of survival if nothing else. Everyone knows pretty much everything about everyone else, and as prickly as he is as a person, Katsuki has to admit he’d grown fond of the class’s camaraderie. Even with the addition of a couple of strays along the way.

Or maybe just one stray in particular.

The one who is currently eyeing Katsuki like a piece of meat at a butchery.

Shinsou is what Katsuki would call a crazy-haired freak on a good day and a conniving insomniac bastard on a bad one. He’d be the first to admit that Shinsou has a powerful quirk, and the way he’s refined and strengthened it over time is nothing to sneer at.

In fact, out of their class, Katsuki is the only one who hasn’t fallen under the influence of Shinsou’s quirk at some point during all of their training, a fact which Katsuki wears like a badge of honor. His strong-headed nature meant that he wouldn’t just let some extra weasel their way into his brain to do their damn bidding. He’s better than that. He’s the best.

Which brings Katsuki back to his normal-not-normal Monday morning.

Shinsou switches into action mode and makes his way over to where Katsuki is lounging in his chair before homeroom starts, gaze never wavering as he approaches.

“The hell do you want?” Katsuki spits. “I got something on my face? Cause you’re about to have my fist on yours if you don’t cut it out with the creepy staring.”

Shinsou isn’t phased by Katsuki’s threats, composed as ever as he smirks at Katsuki’s frown. “I wanna use my quirk on you,” he says.

Totally unprompted, for no reason. 

Katsuki blinks five times, trying to process, before settling on an incredulous look and holding Shinsou's gaze for an entire three seconds to make sure Shinsou sees it before he responds.

“Fuck no,” he says.

And that’s it. Shinsou shrugs, says, “Okay,” and turns away.

He doesn't bring it up again, goes back to his own circle, doesn't even look at Katsuki for the rest of the day— not that Katsuki's checking.

That bastard has a lot of nerve, saying something so creepy out of nowhere then just walking away like it never happened. What kind of game is he playing? 

Katsuki is still thinking about it that evening. He doesn't know why it bothers him so much. It was just so… blunt. He has no idea what was going on in that empty space behind Shinsou's eye bags.

Why the fuck did he have to look at Katsuki like that? And why the hell did he even want to use his quirk on him? It was probably something fucked up. He was just being a creep, Katsuki decides. A creep and a freak. That's all there was to it, so Katsuki could shove it to the back of his mind and let it go.

Katsuki can't let it go.

He keeps finding his mind drifting to that ten word conversation. It happens just a few times, every couple of hours at first.

Then every couple of minutes.

Until it's the only thing he can think about.

It comes to bite him in the ass during Thursday training. He can't seem to focus and it's throwing him off.

Kirishima, his sparring partner, is the first to notice.

"Hey bro, are you okay?" he asks after landing a punch that should’ve been easy to dodge, sending Katsuki to the floor and nearly knocking the wind out of him. He shouldn’t have gotten hit. What the fuck is his problem?

Katsuki groans and sits up. "It's nothing. You didn't hit me that hard, shitty hair," he grunts back.

"That isn't what I meant," Kirishima says, frowning. "You're out of it, dude."

"Fuck off, I'm fine," Katsuki says, getting back up to his feet and shaking out his arms.

Kirishima's frown deepens. "The hell you are, bro. Your head's not in it. Maybe we should just do weights for the rest of the period."

It takes some convincing, but Katsuki eventually caves, abandoning their sparring and following Kirishima to the weight room.

He doesn't miss the way that Shinsou glances their way as they leave the training room.

Why is he checking where Shinsou is looking, anyway?

By Friday night he knows he's a lost cause.

He can't get those lilac eyes out of his head. Every time he blinks, he sees that stare and hears that question.

No, not a question. A statement.

I wanna use my quirk on you.

For the first time, Katsuki finds himself feeling curious. What does it feel like being under Shinsou's quirk? He'd heard different things from different people. Some said everything that happened under his control was just wiped from their memory. Others say it was almost like a dream, like watching themselves in third person.

Then lately some had started to say that it was like becoming hyper-aware, conscious of everything they were doing but unable to do anything to stop it.

Katsuki doesn't know why that thought sends a shiver down his spine.

He decides to ignore it. It's late. He should be sleeping.

He goes to bed.

Katsuki shoots up at 4:30 in the morning, which isn't an abnormal time for him to wake up, even for a Saturday. It is, however, unusual for him to wake up drenched in sweat and half hard. His dream is already fading from his memory except for the whisper of a velvet voice in his ear.

What, pray tell, the fuck.

This is getting ridiculous. It is ridiculous. Shinsou had plagued Katsuki's brain all week, had wormed his way into Katsuki's thoughts and refused to leave. He was in Katsuki's head and he couldn’t figure out why.

The realization hits him like a brick.

He was in Katsuki's head.

It's the only explanation, the only reason that makes sense of why Katsuki has been so distracted and riled up. That eye bag bitch had figured out another way to use his quirk and he was utilizing it to fuck with Katsuki. 

Katsuki's rage boils under his skin and he flings his blankets off of his body, stumbling over to his door and holding back the urge to yell or blow something up as he throws it open. He's going to get that mindfucking bastard to turn off his trash quirk even if Katsuki has to beat the shit out of him.

How fucking dare he. After Katsuki explicitly told him not to use his quirk, Shinsou still had the nerve to dick around in Katsuki's head. He is—literally—fuming as he takes the stairs up to the next floor three at a time, cloying smell of nitroglycerin hanging in the air around him.

He makes his way to the end of the hall and bangs on the door twice, with all the certainty that Shinsou is still awake at this hour, and has probably been awake for the past 2 days or so.

Shinsou appears at the door a few seconds later dressed in a t-shirt and pajama pants with a gaming headset hanging around his neck. "Bakugou," he says, voice flat. "To what do I owe the pleasure?"

Katsuki pushes Shinsou back into his room and lets the door close behind the both of them, deciding he should at least make an effort not to wake up the whole floor if he's gonna rip Shinsou a brand new asshole. His palms crackle as he crowds Shinsou against the wall, despite being shorter. 

"Turn off your fucking quirk," Katsuki hisses.

Shinsou raises his eyebrows. "Uhh, I have to say I really don't have even the slightest clue what you're talking about right now."

"Don't play dumb with me shitbag," Katsuki says, punctuating his sentence with a finger on Shinsou's chest. "You tell me you wanna use your quirk on me on Monday and now you won't get out of my fucking head. I don't know what kinda bullshit you think you're trying to pull but I'm not gonna stand by while you fuckin root around in my brain. Turn it off!"

Shinsou looks at Katsuki like someone seeing a math problem with letters in it for the first time. And then his expression melts into something more smug.

"Bakugou, you know I'm not using my quirk on you, right?" Shinsou says.

Katsuki takes a step back. "The HELL you aren't you fucking—" 

And suddenly Katsuki feels Shinsou's hold come over him, like a ghost breathing across his neck. He shivers and his limbs go limp while his mind goes blank, just for a moment, before he regains control.

Shinsou's smirk widens, " That's what being under my quirk feels like," he says, voice like honey and velvet. He pushes himself off of the wall, walking forward into Katsuki's space until Katsuki feels the opposite wall up against his back and oh shit oh shit oh shit oh shit his brain is short circuiting. 

"So if you can't get me out of your head, that's on you."

Shinsou stares at him with the eyes of a man who has forgotten how to blink and Katsuki gulps, frozen in place.

There's no way. That can't be it. This flower-colored twink, towering over him with that stupid, shit-eating look on his stupid, shit-eating face, biting his lip, and Katsuki's heart is racing because how could someone's mouth look so hot and what was he even thinking he didn't even like Shinsou.

Right?

"You look like you're having some sort of gay panic right now," Shinsou says, a hand coming up on the wall next to Katsuki's head. “Your head working alright? Do you need to turn it off and back on again?”

Katsuki is too wrapped up in his thoughts to clock him for being an asshole because this is really happening . Is this really happening? Katsuki is still in disbelief. If Shinsou really wasn't fucking with him, and Katsuki really was obsessing over him all week, did that mean that he was… attracted? To this freak?

Shinsou is still waiting for Katsuki to give him some sort of response, an infuriating amount of space left between them as Katsuki can't decide whether to pull him closer or shove him away and storm out of the room to forget his embarrassment.

"Listen, if you're not gonna give me something better to do I'm just gonna go back to my game. My team's on a winning streak," Shinsou says, starting to lean away.

Katsuki's arm shoots up, grabbing Shinsou by the back of the neck before he can pull away.

Fuck it.

Katsuki drags Shinsou the rest of the way down for a rough kiss that might be more teeth than lips but Katsuki couldn’t give two shits.

“Wait, Jesus Christ, let me take my headset off first, god,” Shinsou says, pulling back just far enough to take his headset and throw it in the vague direction of his desk.

Katsuki stills. “I fucking swear to god if your shitty gaming buddies were listening in on our conversation this whole time I will—” he gets cut off by Shinsou’s mouth in a kiss that’s much less violent than he’d been a moment before.

“Will you relax for like three seconds?” he says against Katsuki’s mouth. “I put it on mute. I’m not a dumbass. When you hear Lord Explosion Murder himself knocking on your door at four AM you don’t just leave your mic on.”

Katsuki pulls back far enough to give Shinsou a look. “How the fuck did you know it was me?”

Shinsou rolls his eyes. “Who else would be banging on my door at ass-thirty in the morning? I could smell you coming from down the hall.”

Katsuki’s lip twitches. “Fucking creep.”

“You know, I’m not really that into degradation, so if you’re trying to get me riled up, you might want to try a different approach.”

“Shut the hell up.”

“Make me, asshole.”

And Katsuki does, kissing Shinsou and pushing him deeper into his room until the back of his knees hit the bed and he’s forced to sit down. Katsuki straddles his lap, nipping at his lips and running fingers up through his messy purple hair.

“Fuck,” Shinsou breathes. “Can I touch you?” 

Katsuki responds by taking Shinsou’s hands and putting them on his hips, his own hands then trailing over Shinsou’s chest through his t-shirt. Shinsou wasn’t a particularly bulky guy, but their training kept him toned and lean, which Katsuki can appreciate. 

Shinsou’s hands rub down Katsuki’s thighs before he grows bolder, reaching up to squeeze his ass. Katsuki rolls his hips down on instinct, which elicits a soft moan from both of them, not that Katsuki would ever admit to it.

Shinsou's lips are trailing down Katsuki’s neck when he decides to ask the question that’s been burning him up for the past week.

“Why did you do it?”

Shinsou pauses for a moment. “Do what?”

“Why did you tell me you wanted to use your quirk on me?” Katsuki says, hands moving down to hold Shinsou’s hips.

Shinsou hums in thought. “Mostly I wanted to see how you’d react. I was a little disappointed, to be honest.”

Katsuki scoffs, tilting his head to the side as Shinsou’s teeth graze his collarbone. “Disappointed I didn’t say yes?”

“No, I expected you to say no, just thought it would be more interesting. Hoped you’d try to blow something up,” Shinsou clarifies. “Didn’t expect it to lead to this , though.”

“Asshole.” Katsuki pulls Shinsou’s head up so he can look him in the eyes. “But do you want to, though?” he asks.

“Want to what?”

Katsuki bites his lip. “Do you wanna use your quirk on me?”

Shinsou opens his mouth then closes it again, like he’s stopping himself from answering too quickly. “I… Do you want me to?”

Katsuki glares at him. “That’s not what I asked, dipshit. Were you being serious on Monday or not?”

Shinsou’s eyes search Katsuki’s for a long moment and he swears he could drown in that purple gaze, even if his eye bags look like he got them for full price at a bougie department store.

“Yeah, I was,” he finally answers.

“Then what the fuck are you waiting for?”

“Your enthusiastic consent, mostly?”

“Jesus Christ, what you need a fuckin engraved invitation or someth—” is all Katsuki can say before the tendrils of Shinsou’s quirk take hold of him and his body goes slack.

Everything is very fuzzy for a moment, but the feeling slowly fades and reverts to sharp clarity.

“I’ve been working on controlling how my quirk affects people,” Shinsou explains. “There are some situations where increased awareness and… sensitivity are preferable to plain brainwashing.”

Hands smooth up Katsuki’s sides under his tank top and he shivers.

"From now on, you'll listen to everything I say. If there's ever anything that makes you uncomfortable, though, pinch yourself and my quirk will release. Nod your head if you understand."

Katsuki's head nods, and it's very bizarre to feel his body moving without him telling it what to do.

"Good, now stand up and get undressed. Take your time with it, I wanna see a show." Shinsou smirks while he talks and Katsuki can't take his eyes off of it. Could it be an effect of the quirk, or is it something else?

Katsuki slides the tank top off of his body slower than he has ever taken off a piece of clothing before and he hears Shinsou whisper, "Fuck," under his breath. Katsuki wants to laugh at him, but doesn't seem to have control over his face.

And apparently Shinsou is also a psychic because he picks up on that a moment later. "Okay, god, I can't have you staring at me like a dead fish the whole time, so express yourself freely."

Katsuki feels part of the control lift and he smirks.

"You can talk, too. Speak your mind. It's weird seeing you this quiet," Shinsou adds a moment later.

"You gonna save any of the control for yourself, pretty boy? Or are you just gonna have me take the reigns and start giving the orders next, too?"

Wait. Pretty boy? Where the hell did that come from?

"Never mind, shut the fuck up unless I ask you a question," Shinsou says, and Katsuki's mouth shuts so fast he nearly bites his tongue. "And finish undressing. Don't get distracted." A gleam in his eye appears when he says, "Pretty boy."

Katsuki feels his face heat up at the comment and his limbs return to undressing himself. He's already half hard as he stands naked in front of a still fully-clothed Shinsou and would probably be moving to cover himself if he had any control over his own body with the way Shinsou's eyes seen to pierce straight through him.

"Get on your knees," Shinsou says, and Katsuki drops to the floor, knees knocking against the hardwood. "So obedient. Good boy."

If the praise made Katsuki's heart flip, he would deny it later.

"Answer me truthfully," Shinsou starts. "You ever fooled around with anyone before?"

"Yeah," Katsuki replies.

Shinsou raises his eyebrows. "Ever had sex?"

"No."

"Ever sucked a dick?"

"No."

"The fuck did you even do, then?"

"Jacked each other off a couple times."

Shinsou chuckles. "It was a rhetorical question."

Fuck you , Katsuki says internally.

"Do you wanna learn?" Shinsou asks.

"Learn what?"

"How to suck a dick. I'll walk you through it. Bet you'd be good at it, like you are at everything else."

"Yes," Katsuki's mouth says, though he can't believe it after he hears it.

"Yes you wanna learn?"

"Yes."

"Get over here." Shinsou bites his lip, looking like he's trying to hide a smirk. He spreads his legs as he sits on the edge of the bed and Katsuki slots himself between them. Shinsou pulls his pants down just far enough to pull his dick out, giving it a few pumps. Katsuki's own dick twitches and he wishes he could move his hands to touch himself.

"Don't be shy. Grab the base with one hand and give it a taste."

And Katsuki does, tongue sliding up the underside, eliciting, a soft moan from Shinsou. It’s weird, and kind of salty, but not unpleasant.

“You can be braver than that,” Shinsou says. “Take it in slowly, just as far as you can, but if you use your teeth know that I can and will destroy you.”

Katsuki’s lips wrap around the head of Shinsou’s cock and he sinks down slowly, stopping just before it hits the back of his throat.

“Good boy,” Shinsou says, and Katsuki blushes as the words go directly to his dick. “Now move. Use your hand to make up for whatever you can’t reach. I won’t make you deep-throat me just yet.”

Yet .

Shinsou directs Katsuki through his first blowjob, slowly growing bolder with his commands, until they’ve worked themselves into a good rhythm and Shinsou’s hands are sliding into Katsuki’s hair and whispers of praise are falling from his lips and spurring Katsuki on.

Suddenly Shinsou is fisting his hand in Katsuki’s hair and pulling his head back to look at him, eyes smoldering.

“I wanna fuck your mouth,” he says, and the gravely tone in his voice turns Katsuki’s bones to jelly. “Can you take it?”

Katsuki nods mutely and Shinsou shifts forward a little to angle himself better, hand still firmly in Katsuki’s hair.

“Open your mouth and relax your throat,” he says, and Katsuki follows him instantly. “Don’t gag. And remember the teeth.”

He enters Katsuki’s mouth slowly at first, another weird feeling, but he doesn’t choke, thanks to the order.

“Breathe through your nose. Tap out if you need a break,” he says, before slowly starting to fuck into Katsuki’s mouth, letting him get used to the sensation before he picks up the pace.

Katsuki should hate this. He hates it when he’s not in control. Hates when he’s not the one giving the orders.

And yet he can’t deny that he’s absolutely relishing in this. Sure, he has the power to stop it at any moment, but being used as a fuck toy while Shinsou pounds into his mouth has him feeling more turned on than he’s ever felt in his life.

“You know, I don’t get off on ordering people around,” Shinsou starts, “but I do get off on seeing other people get off, and you seem to like it when I tell you what to do.”

If Katsuki’s hands were anywhere near his dick he would’ve come on the spot, but all he can do is moan, making Shinsou curse.

“Open your eyes,” Shinsou says. “Look at me.” Katsuki’s eyes lock with Shinsou’s. “God, you look good like this.”

Katsuki moans again at the praise, and Shinsou bites his lip.

“Fuck, I’m close. Do that again.” And Katsuki does. When the fuck did he get so loud . “I’m gonna come in your mouth,” Shinsou breathes. “Swallow, and keep your eyes on me.”

Katsuki doesn’t blink when he watches Shinsou come. He sees the way his brows draw together, how his eyes close and his mouth opens as he gasps out a breathy moan. Katsuki is so hard it’s almost painful when he swallows around Shinsou until he’s overstimulated and has to pull out. Shinsou’s eyes open and Katsuki is still watching him, ever obedient.

“Fuck, that was good,” Shinsou says, then without wasting a minute he moves on. “Get on the bed. Lay on your back and spread your legs.”

Katsuki gets up, anticipation pooling in his stomach as he positions himself on Shinsou’s bed. Shinsou’s gaze never leaves him, the hungry look in his eyes making him want to take his time, relish in the attention.

“Show me how you touch yourself when you’re alone,” Shinsou says.

Katsuki is too relieved to feel embarrassed by the order and his hand immediately goes to his dick, giving it a light squeeze.

“But don’t come until I say so,” Shinsou adds.

Katsuki doesn’t reel in the glare he shoots Shinsou as his hand starts stroking his dick. There’s already precum dripping down from the head and he smears it with his thumb, shuddering. All of his senses feel heightened and the drag of his palm on his skin feels so intense it's almost painful.

Katsuki throws an arm over his face as his hand starts to speed up, back arching as he already feels so close even though he knows he can't come yet.

He feels Shinsou moving on the bed and his hand is moved away from his face and onto the pillow next to him.

" Look at me ," Shinsou says and Katsuki's eyes snap open. How long had they even been shut? "Already looking so fucked out, and I haven't even put my dick in you yet. Do you always put on a show when you’re jacking off, or is this just for me? God, I can’t decide which one is hotter."

Katsuki bites his lip so hard he thinks he might draw blood as his hand clamps around the base of his dick to stop himself from coming. He wants to sob.

Stupid Shinsou and his stupid fucking quirk. Katsuki is gonna kill him.

Shinsou notices that Katsuki’s hand stopped and he has the nerve to smirk at him.

"You're so obedient. Good boy."

Katsuki moans and bites harder and there's definitely blood now.

"Oh, so you like praise?"

"Yes." 

"Still answering rhetorical questions, I see." Shinsou's hands smooth up Katsuki's thighs, always just too far away from where he wants them. Sadistic purple bastard. His expression softens for a moment. "Is this okay? Do you want to keep going?"

"Yes," Katsuki breathes out, unable to tack on the insults that he’s thinking, but he hopes that his scathing expression gets the point across anyway.

Shinsou's face shifts back to the sly look from before. "Tell me what you want."

"I wanna come."

"Be more specific."

"I wanna come on your dick. I want you to fuck me so good that I'm begging. Want you to pin me down til I can't move and fuck me til I can't remember my name." Katsuki is too turned on to care about the nonsense that comes spilling out of his mouth. That's for future Katsuki to unpack.

Shinsou groans softly. "God, so blunt. You've always had a way with words." He bites his lip. "You can speak freely again. Just try not to be a rude bastard this time."

"How many people have you fucked to be such a sadistic shitbag?" Katsuki blurts out immediately.

"It's like you don't even listen to me, rude bastard. Straight into the personal questions." Shinsou doesn't seem like he's actually irritated, though, as he leans over to his bedside table to pull out a condom and some lube. Obviously prepared for something like this.

"I like knowing the details of what's going up my ass, purple prick."

"And what has been up your ass?"

Katsuki answers automatically, "Fingers, mostly-- fuck your fucking quirk." Shinsou has the nerve to laugh at him as he covers his fingers in lube and Katsuki's breath hitches. "Don't avoid the question. If your dick went anywhere near the fucking Grapist then I'm leaving right now."

Shinsou frowns and his lip twitches. "God, no. I fooled around with one of our classmates a while ago. Tested since then so don't worry." He plunges a finger in without warning and Katsuki's back arches, feeling somewhere between discomfort and anticipation.

"Give a guy a fucking heads up, why don't you."

"I already ordered you to look at me. You should know exactly what I'm doing." Katsuki realizes that his eyes really hadn't left Shinsou for the past couple of minutes, though he'd hardly noticed. In any case, even if he could look away, he didn't really want to. "Relax a little, you're so tight."

Katsuki does instantly, making the stretch a little more bearable. "You could make me come just by telling me to, couldn't you." It's more of a statement than a question.

Shinsou works a second finger into him and looks up, raising an eyebrow. "I could," he answers. "I could make you feel my hands all over you, fuck you with my voice alone, if I really wanted to." His fingers move slowly inside of Katsuki, just barely missing his prostate but knowing Shinsou he's probably doing it on purpose. "Wouldn't have to lift a finger and you'd feel me inside of you." He adds a third finger and the stretch burns a little but Katsuki doesn't flinch. "Wouldn't feel as good as the real thing, though. More like dream sex."

At that moment Shinsou's fingers finally reach deep enough to brush against Katsuki's prostate and he almost sobs in relief, hips bucking up before Shinsou's other hand comes down on his hip to hold him in place.

"Sounds like something you'd be into, though," Shinsou continues, barely acknowledging Katsuki's reaction except for the smirk once again spreading across his face. "Maybe we should do that instead. It'll be good training for my quirk, don't you think?"

" Don't you fucking dare ," Katsuki growls.

"But don't you feel my hands running up your body? Doesn't it feel good ?" And despite both of Shinsou's hands being apparently occupied, Katsuki feels the ghost of a touch running up his chest, making him shiver.

"F-fuck," he whispers, turning his head to the side though his eyes remain on Shinsou.

"You feel my lips drag across your skin, nipping along your neck, down your chest, above your navel, lower…"

Shinsou's voice paints a line of hot and cold running down his body, and he's hardly paying attention to the fingers working inside of him anymore.

"And then you feel my tongue licking your dick from base to tip and it's so good you can't help but moan my name."

Katsuki's hand comes up to cover his mouth as he moans out, " Shinsou ," lest he wake up the whole floor.

Shinsou clicks his tongue. "I'm three fingers deep and you're still calling me by my last name." His fingers brush Katsuki's prostate again and he's so hard that it hurts. "We'll have to work on that."

Shinsou's fingers are gone, then, and Katsuki has to fight back the whine that threatens to escape his mouth.

“I’ve never seen you trying so hard to be quiet,” Shinsou says, almost absentmindedly, as he finally starts taking off his t-shirt. Katsuki’s eyes are locked onto his lean stomach, defined but nowhere near Bakugou’s own physique. 

Shinsou’s hands move slowly to his hips and Katsuki realizes he’s taking his sweet time on purpose. His thumbs hook under the elastic of his boxers and sweatpants and even though that dick was in Katsuki’s mouth just a short while ago he can’t stop the way his breath hitches as he drags them down over it, already fully hard again.

“Turn over, on your hands and knees. You don’t have to keep looking at me anymore.”

Katsuki shudders and does as he’s told. He hears the sound of the condom packet being torn open and after a few seconds he feels the blunt tip of Shinsou’s dick at his entrance.

“I swear to god if you do not hurry the fuck up I will blow your dick off,” Katsuki hisses after a couple moments of of silence.

“That’s all I needed to hear,” Shinsou chuckles, before pushing past the ring of muscle and burying himself to the hilt and Katsuki’s arms nearly give out. He gives Katsuki a few seconds to adjust before he starts to move, setting the pace brutally slow. His hands keep Katsuki’s hips in place as he slides all the way in and out, and Katsuki wants to scream.

“Come the fuck on I’m never gonna get off like this.” That was probably a lie considering how tightly-wound Katsuki had been feeling for the past week, but he still wanted more .

“You want more?” Katsuki can hear that devious smile in his voice. “Tell me how you want me,” he says, leaning forward and pressing their bodies together even more. “Be specific.”

“I told you I want you to wreck me,” Katsuki hisses. “I won’t fucking break. Use me. Fuck me like you mean it, coward.”

Suddenly a strong hand on the back of his neck is forcing Katsuki down and his arms buckle. Shinsou’s other hand holds a bruising grip on Katsuki’s hip as he starts pounding into him. Katsuki sees stars as his prostate is hit over and over with the new angle and he feels like he could come from that alone, were it not for Shinsou’s quirk.

“I bet you’re so close, right?” Shinsou growls. “Bet you’ve been close for a while. Do you wanna come?”

“ Yes ,” Katsuki sobs out.

“Say my name.”

“ Hitoshi .”

“Again.”

“ Hitoshi. Hitoshi. ”

“Tell me what you want. Be nice.”

“For fuck’s sake, let me get off, please .”

Shinsou groans. “Good boy. You’ve been so good for me. Come on, Katsuki. You’ve earned it. Come.”

Katsuki comes harder than he ever has in his life, clenching around Shinsou’s dick and staining the sheets below him. Shinsou fucks him through it then pulls out and gives him a few seconds to come down. Katsuki is breathing heavily into his arms where his face is buried, on the verge of collapsing.

Then suddenly he’s being flipped around on his back, and Shinsou is thrusting into him again.

“Get hard again,” Shinsou says, voice commanding, and to Katsuki’s surprise he does . His nerves are on fire at the overstimulation but it only takes a few seconds for his dick to be fully hard again. “Keep your eyes on me. Fuck, you’re pretty like this. You look wrecked.”

Katsuki can’t even form words to answer. His eyes are glued on Shinsou and by the way his eyebrows are pulling together Katsuki can tell he’s getting close again. He hooks his legs around Shinsou’s waist, bringing him impossibly closer, hands grasping for something to hold onto until he settles on locking his grip on Shinsou’s shoulders.

“Wanna see your face this time,” Shinsou says. “Come with me, pretty boy.”

There are tears forming at the corners of his eyes when he feels Shinsou’s hips snap forward one last time and he comes, bringing Katsuki over the edge with him. Shinsou thrusts in a few more times to ride out his orgasm before he pulls out and collapses onto the bed next to Katsuki.

There’s a slight falling sensation when Shinsou’s quirk finally releases and Katsuki is back to being in control of himself. He suddenly feels very tired, but also incredibly sticky and gross.

He looks over and sees Shinsou’s bloodshot eyes on him, looking at his face like he’s searching for something.

“... Fuck ,” Katsuki finally says, staring back up at the ceiling.

“We already did that,” Shinsou says, like an asshole.

“I should’ve known you were a fucking sadist,” Katsuki says.

Shinsou laughs. “Yeah, well, I never would’ve pegged you for a bottom brat but the world is full of surprises.”

“Eat shit and die.”

Shinsou continues as though Katsuki didn’t even say anything. “Plus, I let you come twice . How is that sadistic? I think that was really quite benevolent of me.”

“I’m fucking leaving,” Katsuki says, making literally no move to get up.

“I can see that.” Shinsou’s expression softens a little and he reaches over to brush the hair from Katsuki’s eyes, touch lingering on the side of his face. Katsuki is too tired to complain about it, or maybe he just doesn’t mind the contact. Unexpectedly, he leans forward to kiss Katsuki, much slower and gentler than all of the kisses from earlier, and unexpectedly, Katsuki kisses him back, turning to get a better angle.

Shinsou pulls away before things risk getting heated again, then starts to sit up. “We should probably start to clean up—” Katsuki pulls him back down, cutting him off.

“In a minute,” he says. “Just… let me catch my breath for a sec.”

Shinsou chuckles, arm slotting around Katsuki’s side.

“Take all the time you need.”