Chapter Text
Katsuki has just finished wiping the kitchen countertop when his phone pings with two notifications in quick succession. When he sees the messages and who it’s from, he wills himself to be normal about it. He forces himself to wait at least five minutes before responding. He doesn’t want to send the wrong message—like he’s desperate, or something.
Shouto reads the message immediately. Katsuki watches as the typing indicator appears and then disappears. He stands in the middle of his kitchen, eyes glued to the screen. He refuses to say anything else, making Shouto give chase. Still, his anticipation grows, as does his excitement for the inevitable to come.
Katsuki doesn’t receive a reply after that. The bastard leaves him on read, without giving any indication of what he will or won’t do. Katsuki knows it makes him a hypocrite—expecting more from Shouto in spite of his own curt replies, but the waiting always kills him.
His nerves build with each moment that passes by, even though they’ve already done this plenty of times before. Shouto has never not shown up after this specific kind of text exchange and Katsuki has no reason to believe that it’s all going to change tonight. That doesn’t stop him from counting down the twenty minutes it takes to get from Shouto’s place to his, however.
It does surprise Katsuki when he receives another message after only twelve.
Katsuki rolls his eyes but buzzes Shouto in. Somewhere in the back of his mind he realises that Shouto must’ve already been on the way when he texted Katsuki, but he refuses to dwell on what that means. Is Katsuki that predictable? Or does Shouto simply have a lot of confidence?
The two of them barely greet each other once Katsuki opens the door. Shouto is on him immediately, stepping right up into his space and backing him against the wall. He kisses Katsuki with heat and familiarity, nudging his thigh between Katsuki’s legs. Katsuki reacts instantly, and he hates himself for it. With a tight grip on Shouto’s shoulders, Katsuki grinds himself on the alpha’s leg. As if his wetness is not indication of his arousal enough, the pheromones he’s releasing are potent with it.
Shouto responds with a growl, turning his head into Katsuki’s neck, right above his scent gland. The alpha inhales deeply, breathing Katsuki in, before licking over the same spot. Katsuki shivers beneath him and slick gushes out of him.
Fuck.
Every time Shouto does this, it affects Katsuki so much. He doesn’t know if Half-and-Half does it on purpose—dangling Katsuki over the edge and teasing him by never giving him what his instincts desire—but it always drives Katsuki absolutely fucking insane.
What normal person does that to another person without biting or claiming them? What alpha pays that much attention to an omega’s scent gland then acts like it doesn’t mean anything?
The answer to both, and the consequent bane of Katsuki’s existence, is one Todoroki Shouto.
Katsuki doesn’t even know when this—whatever this thing happening between the two of them is—became a regular occurrence. They certainly aren’t in a relationship, they’re barely even— No, that’s not fair. They are friends. Just, sometimes they fuck on the side.
So… Friends with benefits, then. It’s quite possibly the most stupid decision Katsuki could’ve made as an unbonded omega, to frequently sleep with the same alpha, but he made it, and he’s here once again allowing Shouto to peel off the layers of his clothing and wrap his lips around Katsuki’s nipple as Katsuki rolls his head back with a silent moan.
This is a bad idea. The tight grip of Shouto’s hands on Katsuki’s waist. This will be the last time. The graze of Shouto’s teeth against Katsuki’s flesh. No more, after this. The press of Shouto’s body closer to Katsuki’s own.
But it feels so fucking good.
It’s a cycle Katsuki is familiar with. He makes promises to himself that he won’t let it happen again and inevitably breaks those promises the second Shouto touches him. Before that, even. The moment Shouto reaches out.
Katsuki is such a fucking idiot.
But he’s an idiot who’s going to make the most of it and get dicked down by an alpha cock tonight.
“Are you gonna actually take me to bed or will you just fuck me in the hallway?” Katsuki pants against Shouto’s ear.
“B-bed.” Shouto’s own reply sounds breathless. “Sorry, I couldn’t help myself, you’re so—”
Katsuki never finds out what he is, because Shouto effortlessly picks him up and starts carrying him to his bedroom. On the way, Katsuki makes quick work of Shouto’s shirt, pulling it over his head and chucking it somewhere behind him.
Shouto lays Katsuki down on his bed with more care than necessary, then goes straight for the drawer where the condoms and lube are kept. Katsuki wriggles his pants off while watching the alpha, feeling a pang in his chest at the domesticity, at how right Shouto looks in his space.
He forgets about it soon enough when Shouto returns, having taken off his own pants and stroking his cock to hardness. Katsuki hungers for it, spreading his legs to welcome Shouto in. As Shouto rolls on the condom, Katsuki dips his fingers between his folds, pumping them in his cunt lazily. His clit throbs but he leaves it alone—it’ll be worth it when Shouto starts fucking him.
When Katsuki pulls his hand back to make way for Shouto, a string of slick follows. Shouto clasps Katsuki’s wrist and holds it in place as he takes Katsuki’s fingers into his mouth, sucking them clean. He licks his lips and hums.
“Remind me to eat you out later. I’ve missed the taste of you.”
“You can’t just—” Katsuki’s heart thuds in his chest. He can feel his cheeks burn. Turning his head to the side, he mutters to himself, “Stupid Half-and-Half, thinks he’s so— Shit!”
Shouto has pushed the head of his cock past Katsuki’s entrance. He feels so full already, and he knows there’s still more to come.
“Katsuki…” Shouto says with a hint of reverence. He always gets a bit dazed in the initial moments, as if his cock momentarily takes over all executive function and has to wait for his brain to catch up. “You’re so wet.”
Katsuki bristles immediately. He doesn’t need Shouto thinking that this means more to him than it does. He doesn’t need Shouto to know how satisfied his omega is right now, feeling taken care of and relaxing wholly in response.
“Shut the fuck up.”
“I can’t.” Shouto shakes his head. He pulls his cock out and hovers it at Katsuki’s entrance, tantalising him. Katsuki clenches around the tip and pushes back onto it, until Shouto takes both of Katsuki’s hands in one of his own and holds them above his head, pinning him in place. A display of alpha strength, one which Katsuki finds annoying but his omega delights in. “You always feel”—Shouto gives a powerful thrust that rocks Katsuki and makes him mewl—“so good. Wrapped around me. Your heat, sucking me in. I could do this for hours.”
It’s corny and stereotypical dirty talk, but Katsuki reacts all the same. He wraps his legs around Shouto and pulls him closer, wanting to feel him deeper inside. And the last thing Shouto said—Katsuki knows from experience that Shouto can go for hours. They’ve done it before, spent the whole day in one of their apartments just fucking, on every surface and corner whenever they pleased, not even bothering to get redressed after. In the end Katsuki had been littered with marks, hickies and bites and scratches. When he was getting changed after work with his sidekicks the next day, they all questioned which villain he had gotten tangled up with. Katsuki finished getting dressed quickly and left without bothering to answer them. He fired off an angry text message to the person responsible, only to have Shouto share a similar experience he’d just had.
By the time they next fucked most of the marks were gone. Shouto paid special attention to those that remained, licking over them and sucking them to vitality.
“Fuck.” The memory makes Katsuki hornier. He thrusts up against Shouto and clenches around him.
“Are you thinking about it too?” Shouto grunts as he continues fucking Katsuki. He sighs and tilts his head back. Katsuki looks up at him, at the scar he’s made his own, at his luscious locks of red and white, and is struck by how attractive the man is. A beautiful alpha, in Katsuki’s bed. Before Katsuki’s thoughts can progress, Shouto says, “We should do it again someday.”
“No.” Katsuki shuts the idea down right away. He’s not doing this again. He can’t. He can’t.
But that had been such a good day. He was so wrecked afterwards but he had never felt better—his omega had never felt more content. And it had been nice to see Shouto finally lose his composure. For all the strength he had, Katsuki had the stamina. In the end he’d almost been crying as Katsuki rode him to completion, then continued fucking himself on the alpha cock until he made himself come, not caring for Shouto’s pleas that it was too much or he was too sensitive.
Shit. Katsuki has to stop thinking about it, otherwise he’s going to do something idiotic and change his mind. It looks like Shouto is going to continue talking, so Katsuki cuts him off. They’re not here to talk, after all.
“Just shut up and fuck me.”
Shouto does exactly that. He makes use of his alpha status and rocks into Katsuki hard and fast, rattling his bed. The sounds of their coupling are loud and obvious and satisfy something deep within Katsuki. When Shouto settles his hand over Katsuki’s womb and begins thumbing his protruding clit while continuing the brutal pace, Katsuki arches his back and lets out a loud moan.
It sends him hurtling towards climax, pleasure building like one of his explosions ready to erupt. This is why he keeps sleeping with Shouto, even though he shouldn’t. They’re so familiar with each other now, particularly their bodies, knowing exactly what the other likes. Shouto knows Katsuki likes it rough, he knows Katsuki likes having his sensitive clit played with.
And Katsuki, feeling cock-drunk and cock-stupid, on the verge of coming, goes against another one of his promises because he knows Shouto likes to hear, “A-Alpha.”
Shouto’s eyes immediately darken. He bares his teeth and snarls, digging his fingers into Katsuki with an unrelenting grip. Katsuki’s cunt pulses and he holds his breath in anticipation for what’s to come.
Which is: Shouto fucking him even unbelievably harder than before, cock punching the spot inside Katsuki that makes him scream. It’s Katsuki holding onto Shouto for dear life as he gets the breath fucked out of him.
Shouto ends up coming first with a low guttural moan, the vibrations of which rumble through Katsuki’s body. He keeps his cock inside Katsuki as he unloads his seed into the condom, the pulsing of which almost makes Katsuki wish they had done this raw. And that’s how he knows he’s about to come—he’s clearly not thinking straight anymore.
Once he’s done, Shouto begins moving his cock in and out of Katsuki slowly, at a pace bearable for him. With his hand, however, he flicks Katsuki’s clit, rubbing the bud relentlessly until Katsuki can’t take it anymore and erupts.
He lets out a yell and squirts all over the alpha, the force of his orgasm pulling him off Shouto’s cock and making him shake. He curls in on himself as his thighs tremble and the aftershocks of pleasure rock through him. He reaches down to touch his sensitive bud. He jolts when his fingers brush over it but he can’t resist rubbing it some more, gritting his teeth through the overstimulation until it pulls a second, smaller orgasm out of him. Then he’s done.
“Gods,” comes Shouto’s voice from above him, full of awe and admiration. “I’ll never get tired of that. You’re incredible.”
Katsuki is embarrassed—somehow he always forgets he has an audience—but he’s also just as proud. He knows he’s fucking hot when he comes, it’s nice to have someone else appreciating the fact. Less nice is the mess he’s made of his sheets, soaked with his arousal and their sweat.
“Ugh. I just washed these.”
“We always forget to put down a towel,” Shouto comments nonchalantly as he removes the condom, tying it off and throwing it in the trash.
Katsuki latches onto the ‘we’. Because there shouldn’t be one, all things considered. They’re not actually together. They’re not a unit. And yet… He can no longer deny that perhaps there exists a part of him that wishes they would be.
Shouto climbs back onto the bed and Katsuki finds himself with an arm full of alpha. Shouto peppers light kisses across his face, cuddling him and snuggling into his hold. Katsuki doesn’t hate it, just hates the unfounded hope and expectation it gives him.
“So how was your day, Katsuki?”
“Fine.” Back to curt responses. They’re just friends with benefits. They don’t need to talk as if they’re anything more. This doesn’t deter Shouto from trying to engage him in conversation, however.
“Mine was okay too. But it’s better now,” he adds with a smirk. Katsuki rolls his eyes but he’s blushing. How can such an empty statement affect him so? Shouto begins tracing patterns on Katsuki’s abdomen. He whispers somewhat solemnly, “I think Soba misses you. You should come over soon.”
Katsuki misses her too, but he can’t. It’s not fair for Shouto to bring up his cat when Katsuki is trying to put some distance between them. It’s bad enough that Katsuki keeps letting Shouto come to his place, it’d be even worse if he went over to Shouto’s. He gives a noncommittal hum and hopes Shouto will drop it.
They lie in silence for a while after that, but before long Shouto starts grinding against Katsuki. Subtly at first, then becoming more obvious as he starts panting and holds onto Katsuki tighter.
“Insatiable fucking alphas,” Katsuki grumbles when Shouto finally gives in and asks Katsuki if they can go again. But judging by how wet Katsuki suddenly becomes, how easily aroused he is around Shouto, maybe he’s the insatiable omega.
“I can’t resist you,” Shouto says like a confession.
Katsuki pulls him into a kiss so he’ll stop talking. So he’ll stop taking more and more of Katsuki’s heart.
By the time they’re finally done, it’s past midnight. They’re both exhausted, drained in more ways than one. Katsuki glances over at Shouto and considers it—asking him to stay. It’d make sense, wouldn’t it? It’s already so late and it’ll just be for the night. They both still have to wake up early tomorrow and Katsuki will sleep easier knowing that Shouto is safe. Here, with him.
But before he can gather up the courage to ask, Shouto is already sitting up and getting off the bed. He picks up his clothes and puts them on before turning back to Katsuki and giving him a smile.
“Good night, then. I hope you have sweet dreams.”
As if there was never any other option. As if the thought hadn’t even passed Shouto’s mind.
That’s all the answer Katsuki needs, he supposes. He was being stupid again, thinking that Shouto would be so willing to sleep over. That’s not what they are, it’s not what they do.
“Alright. Bye. You can show yourself out, you know the way.”
Katsuki recognises that he’s being incredibly rude, but he understands the underlying feeling of hurt less. Shouto looks like he might say something else, but Katsuki turns away from him so he leaves. Once the door clicks closed behind him, Katsuki hangs his head.
“Fuck my life.”
He can’t be bothered cleaning up right now and doesn’t want to go grab new sheets either. It feels a bit gross to be sleeping in dirty sheets soiled by sex, but he’s truly too tired to care. He almost regrets the decision when Shouto’s strong alpha scent hits him hard the moment he gets under the covers, but he’s already being lulled into sleep before he can do anything about it.
Surrounded by Shouto’s scent, Katsuki has the best night’s sleep he’s had in years.