Work Text:
It starts like this:
It’s a normal day at the agency.
Katsuki and Shouto have just finished their patrols, heading back to the agency and shrugging off their hero suits in favor of their more comfortable civilian clothes. When Shouto finishes up, he turns to look at Katsuki. He’s taking his sweet time getting redressed, Shouto thinks.
“What are you making for dinner?” Shouto asks, a little impatient. It’s usual now for Katsuki to make it for both of them, and Shouto’s hungry, and Katsuki’s taking a lot longer than he normally does.
Katsuki grimaces, turning away from Shouto as he pulls on his shirt. “I’m not gonna be home for dinner.”
Shouto pauses.
“Okay,” Shouto says when Katsuki doesn’t elaborate. “Is something happening at the agency?”
It’s not common for there to be a work event that Shouto’s not invited to, but there’s a first time for everything, he supposes.
“Nah,” Katsuki shrugs. “I’m meeting up with someone.”
His voice is guarded off, the way he gets when he doesn’t really want to talk about something. Shouto wants to know, though. He’s Katsuki’s friend, he’s sure of that now, because Katsuki chose to live with him, and not Kirishima, or Kaminari, or any of the other people that believe themselves to be close enough with him.
“Oh, who?” Shouto says. “Is it Izuku? Can you bring him back to our apartment when you’re done? It feels like I haven’t seen him in forever.”
“You saw him last week,” Katsuki says. He doesn't look at Shouto. “And no, it’s not him.”
Shouto frowns. He doesn’t like when Katsuki keeps things from him. “Then who?”
“Some guy. You don’t know him.”
Someone Shouto doesn’t know?
“Who are you friends with that I don’t know about?” Shouto’s voice sounds whiny to his own ears. It’s just — he knows Katsuki.
He knows the way Katsuki likes to take care of Shouto, packing him lunch and cooking them dinner, claiming all the while that he’s not doing it for him and that it’s just easier. He knows that Katsuki puts a blanket on him anytime Shouto falls asleep on the couch, and sets his alarm for him, and always picks up replacements of Shouto’s snacks when they start to get low, and —
“I’m not fucking friends with him,” Katsuki says, drawing a hand across his frustrated face. “Fuck, Icyhot, I’m going out for dinner with him. On a date. Tonight. I met him online.”
“Oh.” Shouto says, and looks away from Katsuki. He closes his eyes, hard.
A weird, burning feeling rises into Shouto’s throat.
He doesn’t — Katsuki doesn’t do this. They’ve lived together for six months, and Katsuki’s never gone on a date, or brought back a hookup, or even stayed out very late. He always comes back early enough to say goodnight to Shouto, before they both split off into their separate rooms.
It’s a routine. Shouto likes routines. He doesn’t like that Katsuki’s breaking it.
When he finally eases his eyes back open, he sees that Katsuki is standing by the agency’s door, watching him critically. He tilts his head, and Shouto’s eyes track the movement. There’s a pause, before, “See you tonight, Shouto.”
The door shuts quietly behind him.
Shouto leaves the agency a few minutes later, with balled up fists and a pit in his stomach.
-
Shouto, in a show of extreme self control, manages to not chase after Katsuki.
It’s not fair, Shouto thinks. He can’t properly explain to himself why it’s not fair, but he knows that it isn’t. Not to Shouto at least.
And, well, how can Katsuki do this if Shouto doesn’t let him?
He decides, eventually, that he’ll stick next to Katsuki as much as he can. By his side. Or, at the very least, not let Katsuki out of his sight. Unless he’s out doing hero work — Shouto makes an exception for that. (Even that, though, is a little bit selfish, when they work at the same agency and are dispatched so much together that Katsuki claims to be getting sick of his face.)
-
He starts it off subtly — as much as he can while trying to keep Katsuki within an arm’s length at all times.
“Hi,” Shouto says the next morning when he walks into their kitchen. It’s around six in the morning, two hours before Shouto usually wakes up, but Shouto has a plan. Katsuki is leaning against the counters, scrolling through his phone as he puts water on to boil. He looks up as Shouto comes in, scrunching his eyebrows together.
“Hey, Icyhot,” Katsuki says, voice gravelly with sleep. He blinks suspiciously at Shouto. “Did you sleep okay?”
“Fine,” Shouto says. He moves to lean against the counters next to Katsuki.
Katsuki quirks an eyebrow up at him, but doesn’t make an effort to move away. “You’re up earlier than usual, huh?”
“Mmm,” Shouto says, and presses the line of his body against Katsuki’s. Wow. Warm. Shouto turns, nuzzling his head into the slope of Katsuki’s shoulder. Comfortable. Like this, he thinks he could go back to sleep.
“You working earlier today?” Katsuki says, moving his arm. Shouto panics, for a second, that Katsuki’s going to push him away, but the arm just wraps around his shoulders, pulling him in tighter. Shouto is so warm.
“No.” Shouto contemplates how he might be able to drag Katsuki to his bed without him noticing. Or, Katsuki would notice, probably, but maybe he’d stay anyway.
“Huh,” Katsuki says, arm tightening, minutely, around Shouto’s shoulders. He scrolls some more on his phone. He laughs at something, jostling Shouto, and so Shouto peeks an eye open, trying to look at Katsuki’s screen.
He remembers suddenly, that Katsuki had mentioned meeting that guy online, and he panics, pressing hard into his arm, desperately trying to see what Katsuki’s looking at. Shouto has to know. He has to.
Katsuki’s screen finally tilts, just a little, and Shouto can see it well enough to tell that it's just Izuku he’s texting.
Shouto deflates, a little. He doesn’t think Izuku and Katsuki are having an affair. Or not an affair. Just a relationship. Shouto’s not dating Katsuki. But his point stands — Izuku would’ve told him, at least.
“Do you want me to make you coffee?” Katsuki offers. Shouto tears his eyes away from his screen.
Shouto wants Katsuki to stay here, with his arm wrapped around him, and Shouto close enough to make sure that he can’t be replaced, but — “Tea,” he says, reluctantly.
“Okay, Katsuki says, and he's patting Shouto on his shoulder, carefully moving his arm away and stepping aside. Shouto feels the loss of his warmth immediately, and he’s left shivering, staring after Katsuki.
-
Shouto never asks about the date. Katsuki never offers.
-
The next time it happens, Katsuki and Shouto are out with the rest of their friends at some dingy bar. Shouto’s trying to keep up with his plan, and so he’s going shot for shot with Katsuki, even if he prefers mixed drinks, or seltzers, or even beer. He gets Katsuki’s attention, so it’s okay, really.
At this point in the night, once they’ve loosened up with a couple drinks, they usually split off a bit; Katsuki goes to catch up with Kirishima, Ashido, and a few of their other mutual friends, while Shouto sticks closer to Izuku. Tonight, though, Katsuki is staying with Shouto, gently maneuvering them into their own little booth and ordering Shouto a water.
Shouto’s had just enough to be tipsy, probably, and so he’s leaning against Katsuki, half in his lap. He’s got an arm around Katsuki’s small waist, pressing them close together. It’s so warm. Shouto’s a little dizzy, but it’s okay, because Katsuki’s here.
They sit for a little bit, Katsuki tilting the glass of water into his mouth and forcing Shouto to drink, until someone comes and sits down on the other side of their booth. Shouto squints his eyes.
Izuku leans across the table, smiling at him. “Hi, Shou-chan!” Izuku says.
“I like your smile,” Shouto says without thinking, then grows red. He must be tipsy, at least a little, because he doesn’t think that he’s supposed to say that. Lucky for him, Izuku just smiles even wider, before he turns his attention to Katsuki.
“So? You guys are getting closer, huh?”
“We’re roommates, Izuku,” Katsuki says. He sounds a little irritated.
Shouto pouts. He doesn’t want to make Katsuki mad. “I like your smile too, Ka-Kacchan.”
Katsuki just stares at him, cheeks going pink. “He’s so drunk right now,” he mutters to himself, or maybe Izuku. Shouto doesn’t really know who he’s talking about, so he nods along.
Izuku and Katsuki talk a little bit over top of Shouto’s head, but he feels a little fuzzy, so he leans into Katsuki’s chest, letting their words wash over him. Eventually, he feels Izuku’s cool hand, pressing to his forehead, before it’s gone just as quickly as it came.
“Make sure he gets home safe,” Izuku says, and then he’s sliding out of the booth.
Shouto almost pouts after him, except Katsuki’s pulling him to his feet and sliding an arm around him, guiding him towards the exit.
-
It didn’t really work out how Shouto intended, but Katsuki took care of him, so he counts it as a win, anyways.
-
It gets easier to follow Katsuki, now that Katsuki seems to welcome it. There’s always an empty chair next to him, a plus-one for all of his events, so that Shouto manages to slot perfectly into Katsuki’s life, fitting right underneath his arm.
“You don’t mind having me there, right?” Shouto asks, once.
“Nah,” Katsuki says, rolling his eyes. “Makes it easier to deal with all the other extras.”
-
“You can’t keep following me around like this, Icyhot,” Katsuki says, wicked grin on his lips. He’s sitting in his office chair, legs spread wide. Shouto’s eyes fall, unconsciously, to the place in between. He could fit there, he thinks, shoulders just narrow enough that he’d be boxed in on all sides, filled to the brim with Katsuki.
“I–I’m sorry,” Shouto says. He bites his lip, but all that seems to do is make Katsuki smile even harder.
He gestures at Shouto, beckoning him over, leaning back in his chair like all he wants to do is watch Shouto. Katsuki tips his head back, leaning back further and further in his chair as Shouto approaches.
“You don’t have to be sorry, baby,” Katsuki says. His hands wrap around the backs of Shouto’s thighs, dragging him in an extra step. “I know you’ll make it up to me, huh?”
Shouto nods vigorously. “I will,” he says, looping his arms around Katsuki’s neck. “I promise.”
Katsuki grip tightens around Shouto’s legs, pulling him up and closer until Shouto’s straddling his lap, legs are spread wide. Like this, Shouto’s work slacks are pulled so tight that they can’t hide anything, and Katsuki’s eyes flicker down.
“Eager, aren’t you?” Katsuki laughs. His hands pull at Shouto until he’s grinding against Katsuki’s thigh, little sparks of pleasure rushing up his spine. Shouto rests his head on Katsuki’s shoulder, grasping out little breaths every time Katsuki pulls him in. He nods against Katsuki’s shoulder, rocking gently.
“What would you do for me?” Katsuki asks against the side of Shouto’s neck. “Would you suck me off, let me fuck your throat? Let me fuck you?” Katsuki asks. “Do you wanna be mine, let me show you off like the pretty little thing you are?”
“Yeah,” Shouto sighs out, closing his eyes. “Feels — feels so good.”
“I know,” Katsuki says, sucking a hickey into Shouto’s neck. “You can do it, princess.”
With those words, Shouto loses his rhythm, chasing his orgasm. Katsuki coaxes his hips to move faster and faster against him, grabbing at him and whispering sweet nothings in his ear.
“Come for me, Shouto,” Katsuki says, and Shouto —
Shouto wakes with a start, wet patch in his boxers.
-
“Can I come with you to get lunch today?” Shouto asks.
Katsuki tilts his head at him. “What, did you finally learn your fucking manners?” He asks. “Seriously, I don’t think you’ve ever asked me if you could do something.”
Shouto blinks at him. Katsuki didn’t answer his question.
“Just come,” Katsuki says, and Shouto smiles at him.
-
One night, Katsuki’s late coming home from patrol. Shouto worries, a bit, that Katsuki has another date that he didn’t tell him about, so he moves to sit on their couch, anxiously waiting for Katsuki to come back. It feels like ages before he hears the turn of the key in the lock, and the door slams open.
Katsuki comes in. His eyes light up when he catches sight of Shouto, sitting in their living room.
“Long day?” Shouto asks.
“Shitty meeting,” Katsuki says. “One of the interns arrested one of our undercover workers and refused to look at his hero license. A big fucking embarrassing mess.”
“Mmm,” Shouto can imagine. Katsuki takes in some interns with intense personalities, but Shouto thinks that it’s sweet, because he knows that Katsuki believes they really can be good heroes. “Are you tired?”
“I’ll head up to bed a little earlier tonight,” Katsuki says. “But not too soon. I’m not that lazy.”
Shouto smiles at him. “Will you watch my show with me?”
It’s a show that Shouto knows Katsuki hates, a dating show where you blindly pick a competitor based on their quirk, that Katsuki claims spreads prejudice against ‘bad’ quirks, but it’s something Shouto started watching with Touya when he was in the hospital, something easy to make fun of, so he has a bit of a soft spot for it.
Katsuki rolls his eyes. “Fine.” He stomps over to the couch, slumping down next to Shouto. He’s so close that their knees are touching, just barely. Shouto lifts the blanket over top of him, and Katsuki wordlessly takes an edge, pulling it over himself.
Shouto turns the television on.
About halfway through the episode, something solid lands on Shouto’s shoulder. When he turns to look, he sees blonde hair, sticking up every which way.
“Katsuki?” Shouto says.
Katsuki snores in response.
Shouto, being very careful not to jostle Katsuki, lowers the volume on the television, and arranges them so that they’re lying on their sides. He pulls Katsuki into his chest, and lightly places his chin on top of Katsuki’s soft hair, continuing to watch his show.
-
It takes a while, but eventually Shouto’s master plan backfires on him. Slightly.
It’s one of those times that they’re cuddling on the couch, Shouto pressed against Katsuki’s chest, one of Katsuki’s strong arms wrapping around him.
Katsuki sits them up, eventually, and bids his goodbye to Shouto, saying that if he stays up any later it’ll ruin his sleep schedule.
Shouto’s so used to following him that he doesn’t realize that he is until they’re standing in front of Katsuki’s bedroom door.
Katsuki pushes open his door, turning back to look at Shouto. He’s crossing his arms over his chest, biceps obvious in the tight fabric of his shirt. There’s a wicked smile on his face. “You planning on joining me, princess?”
The pet name rushes through him like warm water, spreading through his body, a mirror of Shouto’s, uh, dream. He shakes it off, trying to focus on the rest of Katsuki’s sentence. Shouto guesses that Katsuki is trying to make a joke, but he doesn’t think it’s very funny. In fact, if Katsuki would allow him to, Shouto would spend his entire night pressed up against his side. He contemplates his answer. The thought makes him feel warm inside, almost too hot, like he’s just learned his fire quirk, but the thought of leaving Katsuki is even worse — what if he goes off and finds someone else?
“Yes,” Shouto says, and makes his way past Katsuki. Or attempts to, really, because Katsuki is wrapping a warm hand around his wrist and tugging him back. Shouto stumbles back outside into the hallway.
“Icyhot,” Katsuki says. His hand is still around Shouto’s wrist.
Shouto pouts, offended. “You invited me in!”
There’s a pause before Katsuki tilts his head and smirks. “What, so you’d just get in bed with any guy that asked?”
Shouto considers this. It’s a fair question. “No,” he decides finally, after scrunching up his nose at a few unpleasant images that flash across his mind. “Just you. And Izuku.”
Shouto watches as Katsuki’s eyes widen. “Haah? What the fuck?”
”I would like to sleep with you.” Shouto says.
Katsuki coughs, loudly, and Shouto thinks he can see a flush coming across Katsuki’s cheeks. Maybe he’s warm…? Shouto checks to see that he hasn’t set anything on the apartment on fire. It wouldn’t be the first time.
“Shouto.”
“Katsuki.”
Katsuki’s voice is strangely high when he speaks again. “What are you saying?”
”I want to sleep with you,” Shouto repeats. Then, because Katsuki doesn’t seem to get it, he says, “Next to you. In your bed.”
“Why?”
Shouto doesn’t get why Katsuki is being so difficult about this. “Because friends do that! Me and Izuku share a bed all the time.”
The corners of Katsuki’s mouth quirk up. “You and Izuku are not ‘normal friends’.”
Shouto stares at him. Something clicks in his mind. “Are you jealous?”
“Of?”
“That me and Izuku are so close.”
Katsuki laughs. “No, I like it.”
“Good,” Shouto says. “Because we can be like that too.”
He looks meaningfully at Katsuki’s bedroom door.
Katsuki huffs out a laugh, rolling his eyes. The grip on Shouto’s wrist tightens as Katsuki pulls him into his room. “Fuck, get on in here, whatever.”
Entering Katsuki’s room feels like Shouto’s stepping into an entirely different world. It’s neatly organized, close to minimalist, but the decor that Katsuki does have is hero merchandise, sitting on a shelf against his wall.
Shouto goes to look up close at it, seeing the little All Might shrine and the tiny Deku figures next to it. Beside those are Shouto action figures, and then the rest of their class, organized so that they’re all facing out. At the very end of the shelf, there’s a Shouto/Dynamight/Deku trio set, from their debut as pro-heroes.
“Thought you came in here for my bed,” Katsuki says, warm chest pressing against Shouto’s back in a mirror of how they were positioned on the couch. His breath is warm against Shouto’s neck, and he suppresses a small shiver.
“Your room,” Shouto corrects, and then turns around, where Katsuki is — too close. Way too close. Close enough that Shouto has to look down, just the littlest bit, to make eye contact with Katsuki. Close enough that Shouto can count the pale freckles that Katsuki claims to not have, but that always make an appearance in the summer.
Close enough that Shouto can catch when Katsuki’s gaze falls a little lower, to Shouto’s lips.
“I distinctly remember you saying you wanted to sleep with me,” Katsuki says, all low and gravelly. He says it like it’s dirty, and he’s still looking at Shouto’s lips. Shouto thinks he might burn down their entire apartment building. Then Katsuki smirks at him, red eyes seeing right through him, and Shouto revises his estimate for accidental arson to their entire block.
He pulls himself together enough to shrug at Katsuki, eventually, despite the heat rushing through him.
“Alright, then,” Katsuki says, laughing, and then he’s squeezing a warm hand around Shouto’s waist, and turning around. “I’m gonna go wash up, make yourself comfortable,” he says over his shoulder.
Shouto stares at the line of his back as he disappears into the bathroom. Katsuki’s — he’s —
Shouto can’t put it into words, but he starts following what Katsuki told him to do, anyways.
First, he turns on one of the lamps on the nightstand. He’s not sure which side Katsuki sleeps on, but there’s a framed photo of him and his parents next to a pair of reading glasses on one of the nightstand, so Shouto assumes that that’s his side. Next, Shouto rifles through Katsuki’s drawers, looking for a sleeping mask. He finds, uh, decidedly not a sleeping mask, and something more along the lines of what-Shouto-can’t-think-about-Katsuki-doing, and closes the drawer.
Shouto looks through a couple more of his things, finding photos of their friends, and little kitschy keychains, and a childish drawing that says “Kacchan + Izuku BFFS forever”.
And then, because Shouto can, he goes over to Katsuki’s dresser and pulls out one of his old t-shirts, a loose one with the words “Dynamight” printed in big letters on it, worn soft with time. When Shouto puts it on, it falls to his mid-thigh.
He sits on the bed and busies himself with his phone, waiting for Katsuki to finish in the bathroom. Objectively, Shouto knows that he can brush his teeth in his own bathroom, but he thinks if he leaves now, then he’s going to lose his nerve altogether, or maybe Katsuki will decide that he doesn’t want Shouto near him anymore.
It’s a couple more minutes, but eventually Shouto hears the sink turn off and a squeak of the hinge as the bathroom door opens. When Katsuki walks in, he smirks, eyeing Shouto up and down. “Taking my bed wasn’t enough, you had to take my clothes too?”
Shouto shrugs. His mouth is dry for some reason.
Katsuki waves a hand at him. “Your turn, princess.”
Somehow, Shouto’s legs carry him to the bathroom, and he brushes his teeth and washes his face on autopilot, replaying Katsuki’s smirk, over and over.
When he finally comes out, Katsuki’s lying on the bed, wearing soft-looking pajamas that make Shouto’s stomach clench up.
“I was worried you drowned in there,” Katsuki says.
Shouto frowns. “That’s unrealistic.”
“You took a long time,” Katsuki says.
Something in Shouto shivers, a little bit, because if Katsuki knew that Shouto was in there for so long because of him, then he wouldn’t let Shouto stay over. Or be his roommate anymore, even, which feels like a fate worse than death.
“–cyhot?” Shouto hears. Katsuki’s looking up at him, eyebrows furrowed together. He looks confused. “You okay?”
“Yes.”
“Can you stop standing there, then?” Katsuki says. “I’m not gonna be able to sleep if you’re just staring at me all night.”
Shouto can hear his pulse racing in his own ears. His face must contort, or something, because Katsuki’s frowning at him, moving to sit up from the bed. “Okay.”
There’s a pause before Katsuki sighs.
“You don’t have to sleep here, you know. No harm, no foul,” he says. “Just because you said you would, doesn’t mean you have to. You know, if you’re —” he coughs, “— uncomfortable, or some shit.”
Something soars in Shouto then, that Katsuki is thinking about how he feels, and so he plops into the space next to Katsuki. Not too close, though, because he doesn’t think Katsuki would take kindly to his bed turning to ashes, and Shouto isn’t sure if he can control himself when he’s lying next to Katsuki’s warmth, surrounded by the smell of his cologne.
“I want to sleep here,” Shouto says evenly, pressing his face into Katsuki’s soft pillow. “With you.”
It feels like his cheeks are going to fall off with how hard he’s smiling, and Katsuki just groans at him. “So weird. Hot and cold, fucking mood swings,” he says, which would be offensive to anyone else, but Shouto’s riding the high of Katsuki caring about him.
“Thank you, Katsuki,” he says, and closes his eyes.
“Fucking —” Shouto hears, and then he’s sleeping, and the rest of Katsuki’s sentence gets cut off to mumbling.
-
When Shouto wakes up, he’s not entirely sure of where he is.
He’s in a bed, not a futon, like he’s used to, wrapped in warmth. There’s a body curved around his back and an arm thrown over his chest, which is definitely atypical for Shouto. The only people he’s cuddled with are his family and Izuku, and he hasn’t done anything like this with his family in a while, and Izuku likes to cuddle face to face, usually.
He manages to wriggle around enough so that he can take a peek, and —
Blonde, spiky hair. A face, smoothed out with sleep, that Shouto is used to seeing scowl.
Katsuki.
Katsuki’s face, inches away from Shouto’s own. Shouto can — he can feel the warmth of Katsuki’s breath on his face. From his lips, which are right there.
Shouto starts to move, trying to loosen Katsuki’s vice-grip around his waist in order to add some distance between them. He manages to get just far enough away that he feels like he can breathe, before hot hands are landing on his hips, dragging him flush against Katsuki’s body, like Shouto weighs nothing.
“Stop fucking squirming,” Katsuki breathes out, heavy and hot, gravelly with sleep into Shouto’s ear, and Shouto’s hips twitch forward, minutely. Katsuki, he’s — ah — so warm. And solid, Shouto thinks. His hips twitch again.
Katsuki stills them with a flex of his arms, which — Shouto commits the feeling to his memory.
He’s distracted a bit, by Katsuki’s strength, and how big his hands feel, and how warm, and how close they are, that he doesn’t notice Katsuki’s eyes blinking open.
“Sho — Shouto?” Katsuki says, and the hands around Shouto’s hips are tightening to the point Shouto thinks they might leave bruises, until they let go, suddenly, and he’s left feeling a rush of cold.
“Ah,” Shouto says. His hips throb.
“Forgot you were in here with me,” Katsuki says, lips twisting up. Even fresh from sleep, he’s pretty.
Shouto blinks at him. “Oh. Um, sorry.”
“Don’t be sorry, princess,” Katsuki says. “It was a nice surprise, huh?”
Shouto nods. He holds his breath as Katsuki leans in close, surrounding Shouto on all sides. His hand slides up to Shouto’s neck, pulling him in. It feels like a firework going off, everywhere Katsuki’s touching him.
“Was it good for you?” Katsuki whispers, sweet and hot, into Shouto’s ear.
Shouto whines, heat spreading to his cheeks and down his body. His voice cracks as he speaks. “Y–yeah.”
A second passes, long and unforgiving, before–
“Fuck, I really want to kiss you,” Katsuki says, and then he turns red, hiding his face in the covers.
“Uh,” Shouto blinks at him dumbly. There’s no way that Katsuki just said what Shouto thinks he said, and Shouto swallows hard, throat clicking audibly. Katsuki… he wants to kiss Shouto?
Katsuki peeks at Shouto. His ears are pink.
“Sorry, Icyhot,” Katsuki says. “Don’t wanna make you uncomfortable.”
“You want… you want to kiss me?” Shouto asks. His brain is running a mile a minute, just he wants to kiss me he wants to kiss me he wants to kiss me he wants —
Katsuki avoids eye contact. “Any other pretty dumbass lying in bed with me? ‘S what I said.”
Shouto blinks, then wonders if he’s dreaming, somehow, and decides that if he is, there’s no downside to saying yes, so – “Okay.”
There’s a pause where Katsuki is just squinting at him, like he’s trying to decide if Shouto’s being serious or not. Shouto must pass his test, because Katsuki's leaning in closer, and closer, until Shouto’s going cross-eyed trying to follow his movements.
He closes his eyes just as there’s a press of a warm, soft mouth against his own.
It’s chaste at first, but soon Katsuki’s deepening it, just the slightest, moving his lips against Shouto’s. Shouto tries to mimic what Katsuki’s doing, but it’s been a while since he’s kissed anyone, and the one time he practiced with Izuku doesn’t count much, anyways, so he lets Katsuki take the lead.
He’s drawing back, waiting until Shouto opens his eyes again, then diving back in, waiting just long enough for Shouto to chase after his lips. Every time he pulls back, Shouto can hear himself whining, loud in the quiet of the room.
Just as Shouto’s starting to get impatient, hands fisting into Katsuki’s pajamas and pulling him close, Katsuki bites down, hard, on his bottom lip.
Shouto opens his mouth in shock, just enough for Katsuki to lick into him, and Shouto’s, well, pretty sure that he isn’t dreaming, anymore.
Eventually, a warm hand squeezes Shouto’s waist, and Katsuki’s pulling away. Shouto pouts at him.
“Morning breath,” Katsuki says by way of explanation. “Let’s brush our teeth, okay?”
Shouto’s lips are still buzzing with the feeling of Katsuki’s against them, and so he presses two fingers to his mouth. “And then, we can… do more?”
“Fuck, you’re cute,” Katsuki says. He gives Shouto a onceover that makes Shouto feel hot, again. “Yeah, after we wash up, we can ‘do more’.”
Before Shouto can do something stupid, like make a sound or pull Katsuki in for another kiss, Katsuki’s standing up and holding out a hand.
Shouto takes it.