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Bakugou feels his chest vibrate with the force of his heartbeat. It’s like a fist thumping against his sternum and rattles his entire chest. He’s used to his naturally elevated heart rate and how fast it needs to be to keep him from passing out due to the nitroglycerin in his blood. But this is something entirely new.
He feels more than hears the clack of Kirishima’s barbell against his own teeth and can’t help the shaky exhale he breathes right into Kirishima’s mouth. Kirishima breathes it in like it’s his own air and presses back into another deep, sloppy kiss without hesitation.
Bakugou is discovering that Kirishima kisses like he does anything else - with extreme passion. Bakugou has honestly lost feeling in his lips and doesn’t know where his end and Kirishima’s begin. If his brain was fully functional, he’d feel
embarrassed
pissed at his lack of reciprocation, but he can only stand there and take it.
Kirishima has him pressed up so tightly against the door that Bakugou can feel every line of the wood against his back and every muscle of Kirishima’s against his front. Kirishima has both hands in Bakugou’s hair. One is wrapped around his undercut, fingers so long they press behind his ear. The other is constantly switching between running through the unkept mess atop his head and joining the other to preciously hold his head in his hands.
Bakugou’s own hands are uselessly dangling at his sides. Bakugou, who takes pride in his ability to do amazingly dangerous and awesome things with his hands, cannot make a decision on what he wants to do right now with them. All of his focus is zeroed in on Kirishima’s tongue that drags wet, firm lines against his own; his sharp teeth that he uses so carefully on Bakugou’s lips so it’s just enough to grab and pull but not enough to rip and tear; his heavy breaths that have just a smidge of voice in them so it’s like he’s panting into his mouth.
Kirishima is kissing the life out of his body, devouring his soul, and Bakugou is standing there like a limp noodle.
“Ei,” Bakugou finds himself begging, but he doesn’t know what for.
“Yeah, baby?” Kirishima’s voice is the deepest it’s ever been, and Bakugou dies.
His eyebrows furrow as he lets his lead head fall back against the door with a dull thump, whine high-pitched and slutty as he reacts to the pet name. Kirishima doesn’t let him run away for long and tilts his head back down to kiss the wrinkles between his eyebrows away and trail more down his nose and back to his spit slick mouth.
“Ya like that, hm?” Kirishima’s voice has a teasing lilt to it and that’s all Bakugou needs.
One of his hands flies up to grab a fistful of the hair at the base of Kirishima’s neck and tightens enough to tilt his face up and separate their lips. The fingers of his other hand press unforgivingly into his jaw just like the grip Bakugou had on him when he first inspected his tongue piercing.
Kirishima takes it all in stride but doesn’t let go where he holds Bakugou’s head in his hands. He just peers down his nose at him with half-lidded, blown eyes. He’s still panting.
“Say it again,” Bakugou doesn’t ask, and it makes Kirishima’s eyes flutter.
“Baby,” Kirishima breathes.
“Again,” Bakugou tugs Kirishima’s face a little closer, not letting up on the grip he has in his hair.
“Baby,” Kirishima puts a little more gravel into the next one.
Bakugou pulses the handful of hair he has, making his best friend breathe so heavy it causes a little growl in the back of his throat, and pulls Kirishima’s face just close enough that their lips tickle one anothers’, “again.”
“ My baby,” Kirishima’s red is swallowed up by the black of his pupil as he looks at Bakugou like he’s the only thing in the world.
Bakugou replies with his mouth rather than his voice, finally leading the kiss. Bakugou kisses not too differently from Kirishima, but where Kirishima is passionate, Bakugou is thorough. His tongue trails up and down every serrated tooth and sucks Kirishima’s tongue into his mouth. It earns him the first moan of the night, and he greedily swallows it up.
“Bakugou,” Kirishima breaks up the kiss this time, but Bakugou ignores him.
“Baku–,” He tries again but is stopped short when his voice hitches at the feeling of Bakugou pulling the shit out of his hair.
“Not my name.”
“Baby,” Kirishima moans as Bakugou tugs on his hair once more, flexing his fist.
“Fuck, yes.”
Bakugou feels feral and downright intoxicated at the sound of Kirishima and the look on his face when he pulls his hair. His hand commands where Kirishima’s head goes - if he tightens his hold, Kiri’s face tilts up; if he twists his hand, his head moves whatever direction he chooses. Bakugou is drunk on the knowledge that Kirishima is at his beck and call.
“You look so good,” he verbalizes his thoughts, and Kirishima’s eyes flutter again at the praise.
“Yeah?” Kirishima’s voice is dangerous, the way he practically moans each word.
It makes Bakugou want to crawl inside his skin.
“You sound …,” Bakugou trails off as Kirishima’s tongue swipes along the upper row of his sharp teeth, that horribly sexy tongue piercing sparkling with spit.
“Sound like what, baby?”
“Sound so good.”
Bakugou cannot find any other word to describe it, but Kirishima seems to love it and can’t help the jerk of his hips that suddenly makes Bakugou very aware of how hard they both are. Their hips are squared up but distanced, so Kiri’s movement brushes their erections right up against each other. It makes Bakugou gasp, and he looks down to see two very obvious tents in their shorts.
Kirishima takes advantage of his distraction and steps forward to fit a thick thigh between Bakugou’s legs, pressing delightfully against Bakugou’s bulge. Bakugou watches it all happen but still can’t help the groan that rumbles from his chest. Kirishima tucks his thumbs under Bakugou’s jaw and lifts his head up so they make eye contact. Bakugou is about to open his mouth - for what? He has no clue - but Kirishima rolls his hips so slowly that Bakugou can feel every inch of his deliciously huge thigh drag up his dick and back down. Kirishima’s hard cock pushes up his hip and presses into his stomach with the movement. He does it all while staring into Bakugou’s eyes to catch how they widen and roll into the back of his head.
Their twin moans are loud in the quiet room.
Bakugou immediately starts to squirm and tug on Kirishima’s hair, impatient and tortured by how drawn out one movement can be. Kirishima grunts with each yank but takes it without complaint as he starts another traitorous, slow-motion grind against Bakugou. Bakugou stills long enough for the pleasure to make him curl his toes and whine high in his throat, but once Kirishima shifts back to reset for another, he starts to squirm again.
Kirishima huffs and gives up one of his hands to grab Bakugou’s hip and press him against the door so solidly he has no wiggle room. Bakugou’s brain officially shuts off and the fight leaves his body due to every inch of his 5’10’’ self being touched by Kirishima. Again, he’s left to just stand there and take every roll of Kiri’s hips that leaves his dick throbbing in his pants.
Kirishima doesn’t let up on him or speed up his pace. He looks Bakugou in his eyes as he slowly, but surely, drives him into the plane of insanity. Kirishima’s thumbs still press deliciously into the meat of Bakugou’s jaw to keep him looking up. Bakugou wants to drop his head and watch as Kirishima fucks him through their clothes, but when he tries to move his head, Kirishima just presses harder and keeps him in place.
Bakugou is losing his mind, head foggy and eyes hazy. It feels like when he accidentally took a 100mg gummy instead of a 10mg and all he could do was lay down and wait for the high to go away. Everything felt like it was in slow motion, even his breathing. He didn’t feel like he was in control of his body.
Right now, he feels like his body is controlled by Kirishima. And he fucking loves it.
“Yours,” Bakugou croaks out with the next roll of his hips.
He watches in real time as Kirishima processes his words and the remaining patience in him dissipates. Suddenly, the drowsy look in his eyes is replaced by a wild glint, and Bakugou jerks as Kirishima’s hand on his hip slides to underneath his ass as Kiri one-handedly lifts Bakugou up. Bakugou reflexively wraps his legs around his waist. He half expects to be taken somewhere else, but he’s just pushed right back up against the door.
He can feel the head of Kirishima’s cock against his balls due to their height difference and the fact that Kirishima is all legs. Kirishima gives his ass one firm squeeze before wrapping his entire right arm around Bakugou’s waist so he can pull him tightly against him and control their hips. With the new position, rather than grinding against each other’s legs, their dicks are flush against each other. Everything that Kirishima has done to him so far seems to build and build, but Bakugou is greedy. He wants more.
“Ei,” Bakugou moans into Kirishima’s mouth when he starts to grind their dicks together. “More.”
“More what?” Kirishima’s mouth starts to trail kisses down Bakugou’s jaw.
Bakugou feels the hair on the back of his neck stand up, and he can’t help but squirm in Kirishima’s unbreakable hold as his lips get closer and closer. He can feel Kirishima’s puffs of air, and it makes him shake in anticipation. But right as his lips graze his skin, he stops.
“Eijirou,” Bakugou jerks his hips in frustration and pushes his neck towards Kiri’s mouth.
“Tell me what you want, ‘tsuki,” Kirishima whispers and when he speaks, his lips tickle his neck.
“Why are you teasing? Fuck you,” Bakugou has zero patience left.
Kirishima’s long-ass fingers press into his jaw again and slowly move lower and around his neck. Bakugou whines quietly in the back of his throat when they brush across his adam’s apple. Kirishima repeats himself and firmly grips his neck - not enough to cut off air flow but Bakugou feels like he’s burning his fingerprints into him.
“I want more,” Bakugou’s tone could be described as whoreish.
“More of what, baby? Be specific,” his hand squeezes with the last word, and Bakugou’s eyes roll into the back of his head.
“Anything - everything. I want more, more, more ,” Bakugou demands, lost in his own pleasure.
Kirishima takes pity on him and starts to grind their hips together again, finally placing open-mouthed kisses with the perfect edge of teeth against his neck. Bakugou can feel the dig of his sharp teeth prick into his skin, and he hopes to God they’re leaving marks. He rolls his hips in time with Kirishima, now as fast as their bodies let them. Bakugou starts to feel his orgasm build with each push and bite.
Just when he’s starting to reach his breaking point, Kirishima gives his neck a lick from collarbone to jaw that runs over each pinprick that feels like static when given attention. Bakugou growls in frustration and the loss of stimulation against his sensitive neck, but Kirishima just shushes him. If he were any more lucid, he would heatbutt him in retaliation, but Bakugou is so dick-drunk, he just whines.
“Look, baby,” Kirishima pants directly into his ear, and Bakugou full body shivers as he lets Kirishima’s hold on his neck pull his head down.
The sight that greets him makes up for the loss.
With every roll of their hips, Bakugou can see the head of Kirishima’s flushed cock peek out from the waistband of his shorts. Its slit shines with pre-cum, and Bakugou has no control over the moan that comes straight from his core as he’s pushed over the edge and cums in his underwear.
Kirishima doesn’t let go of his head and keeps him looking down. The grip he still has on Kirishima’s hair must be vicious, but it seems to just egg him on. The rolling of his hips are now borderline-aggressive thrusts that make Bakugou’s spent dick twitch weakly, imagining him fucking inside of him.
“Fuck, yes, look at you,” Bakugou starts to ramble. “Your dick is huge, Ei. It’s so wet - I want to put my mouth on it so bad.”
Kirishima’s groan floats down from where his forehead is pressed into Bakugou’s temple, and the arm around his waist grabs him tighter.
“Look at how you fuck me. It feels so good. I can’t wait until it’s inside me.”
“Oh God,” Kirishima practically whimpers, and his hips somehow speed up.
“Yes, yes, yes,” Bakugou chants in time. “I want you to cum. Cum on me.”
“ Mine ,” Kirishima growls into his ear, and Bakugou is genuinely debating a round two.
“Yours, Ei. Forever and ever, now fucking cum,” Bakugou orders and who is Kirishima to not listen.
His orgasm is brutal, shooting up and hitting Bakugou in the chin with its intensity. Kirishima’s moans are unabashedly loud, and Bakugou hums with each one as he watches Kirishima cum for what feels like forever. His dick pulses with each rope of cum before finally settling down with a vicious twitch, and Kirishima pants, spent.
Bakugou finally lets go of his hold on Kirishima’s hair, apologetically rubbing the base of his head and scratching it. Kirishima practically purrs, leaning back into the touch. After almost a minute of petting, Bakugou starts to get impatient and the feeling of cooling cum on his face and in his pants grosses him out.
“Set me down, Ei,” Bakugou lightly kicks his heel into Kirishima's back and earns a grunt.
Kirishima gently unwinds his arm and leans down to let Bakugou put his feet on the floor. He stays bent over, however, and tucks his face into his neck. Bakugou allows it for now and uses Kirishima's somehow unscathed shirt to wipe the cum from his face. Kirishima pays him no mind, leaving lazy closed-mouth kisses along the marks he's sure Bakugou will want to kill him for in the morning. Bakugou, still sensitive, bats at Kirishima's shoulder.
“Lay off, Ei,” Bakugou half-heartedly grumbles.
Kirishima gives his neck one last peck before traveling back up, across his jaw, and stopping right at his lips. His eyes flicker up to meet Bakugou's usual, neutral stare. They take a moment to just look, breathing each other’s air.
“Bakugou–”
The eyeroll is something vicious.
“Already told you, that's not my name,” Bakugou’s bold statement is lessened by the heat radiating off his face.
“Katsuki…,” Kirishima pauses to see if he got it right and is met with a small shrug. “I’ve been waiting for the right moment to tell you. I'm sorry our friends beat me to the punch.”
Bakugou clicks his tongue and continues to stare at Kirishima. Kirishima realizes his words don’t really mean a whole lot to a man of action like Bakugou. So, he fixes it by leaning in and kissing Bakugou with every ounce of his love, his devotion, his everything. Bakugou lifts his arms to wrap them around Kirishima’s shoulders and kisses him back with his impatience, his trust, his everything.
They don't talk for the rest of the evening, but exist in each other’s orbit a little differently than before.
When they shower, they do it together - shampooing the other’s hair and handing off items without needing to ask. They finish their homework together - Bakugou pointing out mistakes then tapping his own paper to show where Kirishima messed up. They eat dinner together - Bakugou cooking, Kirishima presenting him with the ingredients he needs and spices he loves, and both of them sneaking back up to Bakugou’s room to eat on the floor with a phone propped up, watching YouTube. They sleep together - Bakugou closest to the wall with Kirishima guarding his back, like always.
As they drift off, they say one word each.
Yours.
Mine.