Archive of Our Own ^beta

Bakugou’s been obsessed with Kirishima’s teeth since before they got together. How is he supposed to help it when it looks like Kirishima could chomp off someone’s head? Having that kind of power built into your body is just sexy .

The first time they’d made out, he’d just held Kirishima’s mouth open and licked the sharp peaks of each tooth. He’d ended up with a bloody tongue and bruised lips but it was so fucking worth it.

He loves how much Kirishima indulges him. They haven’t even had sex yet but Kirishima bites down on his shoulder whenever they masturbate together and nothing, nothing has made him cum that hard in his life.

A week ago, Kirishima got a little too excited and bit down on his nipple. They had to figure out a way of getting Recovery Girl to kiss him better without revealing how filthy they were to the old lady. Luckily Bakugou’s reputation as a little gremlin meant she didn’t even ask for explanations.

Kirishima had been so, so sorry but Bakugou had ended up cumming in his pants...even harder than everything they’d done so far.

It took him several days to convince his stupid boyfriend that he liked it, that maybe he even liked the...pain? Then he had to deal with Kirishima waking him up past midnight because he’d discovered what pain play was and wanted to try it with Bakugou.

Normally someone interrupting his sleep, even his loving boyfriend, would immediately get blown up. But it was adorable how hard Kirishima was trying and if Bakugou was honest, he was really, really excited to try this too.

He’s not sure what Kirishima has planned but Bakugou is going to bulldoze over it ‘cause he has the best idea. 

Bakugou is going to use the IOU card he has from when he gave Kirishima a blowjob. He's pretty sure he sucked the redhead's soul out of his body when he got down on his knees and deep-throated Kirishima. Fucker was big too! It’d taken him many embarrassing attempts and stolen vegetables to train. He wasn’t going to tell Kirishima that. He could just think it was his natural skill.

He takes a long shower, shaving all over because he wants to, and slips his fingers into his hole. He hasn’t told Kirishima he does this either but he has a feeling he knows anyway. Kaminari had joked about him being a bottom and he didn’t bother denying it. He’s not a liar and he’s not ashamed. 

Why put a fucking pleasure spot there if it’s not meant to be used? If Kirishima wants to spend the rest of his days slamming into it, Bakugou isn’t going to be stupid enough to stop him.

He sighs in bliss as his fingers brush against it. He imagines Kirishima’s big, thick fingers instead. He has to try so hard to reach it but it would be so easy for Kirishima. He can’t wait till they’re fucking. But what he wants to do tonight? He wants it even more than Kirishima’s stupid, huge cock inside him.

An orgasm later, he’s feeling much better. He wonders how the class would feel if they knew the best way to calm him down was to make him cum. Probably best that they never find out. It was enough that Kirishima had that knowledge in his arsenal.

He hums a little to himself as he rubs his body down with an expensive moisturizer he stole from his mother. It makes his skin shimmer and Kirishima likes that shit. Speaking of his boyfriend, he can hear Kirishima next door knocking things around. He wants to be knocked around too!

Bakugou kills the lights and plugs in the stupid lava lamp Kirishima got him. As a final touch, he tosses some of that super strong healing cream on the side table. He doesn’t bother with clothes and jumps up on his bed, getting comfortable against the headrest, legs spread open.

Kirishima bursts in without knocking, like always.

“Bakubabe, I’m here! Oh woah, you’re ready to go, huh?”

Kirishima looks at him with hungry eyes and Bakugou licks under his bottom lip as his mouth flicks up into a grin. His boyfriend is an alpha man through and through and he loves it when Kirishima forgets to put on that sweetheart front he has for everyone else. This side is just for him.

Kirishima hurries over to the bed and Bakugou kicks up a leg to his chest to stop him from coming closer.

“I know what I want to do tonight,” he purrs.

“Oh...I thought...I thought I was deciding?” Kirishima asks, tilting his head like a confused puppy.

“Nope,” he pops his lips on the p. He hooks his foot around Kirishima’s thick neck and pulls him down, “I’m calling in my favor. I want a blowjob.”

“...really, baby? I, uh, I thought we were gonna try the pain thing? I’ve been reading so much! I promise I’ll make it good and -”

Bakugou shuts him up with a kiss then bites his earlobe, “you’re going to make it painful, Red.”

“B-Bakugou?” Kirishima stares at him with wide eyes and Bakugou can’t help but nuzzle into him. Fuck, he never thought he’d end up fucking falling so deeply.

“Your teeth,” he whispers and he can see understanding dawn in Kirishima’s eyes because goddamn everyone might think he’s stupid in some ways but when it comes to Bakugou? He’s the fucking smartest fucker out there.

Kirishima gives him a sweet kiss, “if that’s what you want, baby.”

Bakugou’s face lights up with a feral grin. It’s exactly what he wants! He’s about to push Kirishima’s face down into his crotch when Kirishima stops him.

“Okay, first we need a safe word.”

“The fuck for, I fucking trust you. Don’t you trust me?”

“Bakugou, please? You might say stop and not mean it. I need to know when it gets too much and...it might get too much for me too. I don’t want to actually hurt you. I don’t think I could…”

“Okay, okay, you loser, don’t get all sappy. Uhh...Chargebolt.”

“Bakugou, what the hell man!”

“Don’t call me man when my cock’s out, Red! And can you think of anything less sexy than bringing up that loser in bed?”

Kirishima laughs despite himself, “fine, fine! If we really need to stop, we say...Chargebolt?”

Bakugou nods excitedly. They can start now!

Kirishima pushes him down and he goes easily. The fucker is still dressed but that’s kind of hot so Bakugou doesn’t tell him to take his clothes off. He likes being the only naked one.

He shivers as Kirishima kisses the healing wound on his shoulder. He makes his boyfriend refresh it every time Recovery Girl heals him because there’s something about seeing those sharp indents on his own body that makes him feel so good.

Kirishima licks down to his nipples and takes one into his mouth, nibbling on it until it hardens into a little bud. He flicks his tongue and knocks it around and Bakugou arches his back. It’s already so good! But he’s impatient and he wants Kirishima to move.

Kirishima chuckles into his chest but dutifully moves down. He stops at his belly button to give it a kiss and then settles between his legs, spreading them even wider.

He looks up at Bakugou and Bakugou feels his heart stop. Why is this motherfucker so handsome? Kirishima seems to understand what he’s thinking and smiles softly. Bakugou wants to kick him but his legs are trapped by his boyfriend’s wide body.

Kirishima kisses the tip of his cock and asks, “you sure? It’ll probably hurt a lot.”

“Just don’t tear it off and we’re good.”

Hot, wet heat engulfs his cock, and his mind blanks for a moment with how good it feels. Then sharp teeth lightly graze along the entire length of his cock as Kirishima moves down and Bakugou keens as he instantly cums.

Kirishima swallows and licks him clean and then pulls off. Bakugou’s sure he didn’t have to undergo any fucking training. His mouth’s huge and Bakugou’s cock isn’t all that big.

“I’m glad you enjoyed that, baby,” Kirishima says softly.

“What the fuck? You not thinking of stopping already, are you?”

“Oh, you want to continue? Won’t you be sensitive?”

Bakugou scowls at him. No soft after-sex cuddles already! He’s not done, that tiny prickle of pain has awoken something in him and he wants it to hurt .

“Okay, okay don’t be a brat, I’m getting to it.” Kirishima shakes his head but gets back down.

Bakugou squirms as Kirishima takes him back into his mouth, fuck he is sensitive but that means he’ll be able to feel so much more. He can see Kirishima hesitating so he grabs his hair and pushes himself deeper into his mouth.

“I’ll fucking use the safe word, Red. COME ON!”

Kirishima bites down on his cock in retaliation and Bakugou immediately lets go with a gasp. He didn’t bite that hard, not enough to break the skin but Bakugou suddenly realizes Kirishima could rip his cock off and that has it fattening up again.

Kirishima slides off the same way, grazing all the way down with those serrated teeth, and then takes the head into his mouth, nipping at it. 

Bakugou can’t stop moaning. This is the best he’s ever felt in his entire life. He’s going to fucking get down on one knee and propose to Kirishima after this. The fucker is his for life. He can’t not have this all the time.

This feel of danger, the loss of control, it’s sublime, it’s...peaceful. His mind is quiet to anything that isn’t pleasure. Only Kirishima can give him this reprieve.

Jagged points dig into the middle of his cock and he can imagine the imprints they leave behind. A sign of who his cock belongs to. He has to squeeze his hands into tight fists to keep himself from cumming again.

His cock twitches in Kirishima’s mouth and the redhead takes it as a sign to move faster. He bobs his head up and down, not bothering to be careful of his teeth, and pangs of painful pleasure throb in Bakugou.

Kirishima pulls off with a gasp and kisses down the underside of his cock. He forces Bakugou to lock eyes with him as he takes one of his balls into his mouth. Bakugou’s panting and his body is glistening with sweat but like hell does he not want Kirishima to continue.

He nods and Kirishima starts nibbling on his balls. Bakugou throws his head back on the bed with a loud thud as molten heat zips through his body. Kirishima’s going above and beyond. He can feel the prickle of teeth but also the sloppy mouth sucking and licking and leaving a mess of his balls.

A confused moan leaves his lips as Kirishima pushes his hips up and keeps kissing down. A wet stripe is licked down his taint and he quickly gets with the program. Fuck yes!

He hooks his hands around his ankles and folds himself in half to help Kirishima along. He’s rewarded with a slobbering kiss all over his rim.

His boyfriend is the fucking best, he thinks, before his mind again blanks as Kirishima shoves his tongue in. He could’ve probably been gentler but they’ve both realized Bakugou’s all about the pain.

Bakugou humps back on his tongue, uncaring about the way his hole protests at the rough treatment. Kirishima shoves his face in deeper and deeper and Bakugou near loses his mind when he feels sharp teeth press against his rim.

Kirishima nuzzles in and tries to bite down with his tongue still thrusting in and that’s it, Bakugou can’t hold it off anymore. Cum shoots from his cock as he screams with all his might. He’s sure he’s lost several important brain functions as his arms and legs flop down uselessly and his body goes limp.

Kirishima eases up on the teeth but gently licks in his hole until Bakugou makes a noise of protest. Then he folds Bakugou’s legs to the side and climbs up so he’s spooning him.

“Have - have healing cream,” Bakugou slurs. Kirishima kisses his open mouth and leans over him to grab the tube.

“I didn’t break any skin!” kirishima exclaims happily as he soothes Bakugou’s poor cock and balls with thick layers of the cream.

The relief is instantaneous. Still,

“Ya could next time?” Bakugou manages.

Kirishima just looks at him. Then he kisses his nose, “I don’t know, baby. I think I want you crying on my cock next time.”

Bakugou sleepily hums his assent. Yeah, he wants to be split in half on that cock too.

Kirishima is muttering something about whether Midnight would let them borrow her whip when his eyes slide shut and sleep takes him.