Bakugou and Kirishima don't kiss often, and never in public. But they have their reasons.

CW: NSFW, accidental voyerism, accidental exhibitionism? Close enough

Oh yeah #RuinHaveYouSeenThis

“What’d you mean /no/? He’s your boyfriend!” Kaminari sounded positively affronted.

Bakugou ground his teeth, casting Kirishima a sidelong glance before answering, “I mean we don't kiss-” he began, but dunce face cut him off before he could finish.

“What, like /ever/??” The little blond demanded, slamming a hand down on the coffee table, jarring the empty glass bottle that lay on its side in the centre to spin another inch, “I thought that was gonna be the easiest dare ever for you!” He huffed.

“Dude, we totally kiss! We just don't do it-” Eijirou tried to explain, but Mina stuck her stupid nose in this time instead.

“But Bakugou just said you don't?” Her tone was contemplatory for a moment before she snapped her fingers, “oh! Is it tough with sharp teeth? I'm sorry honey, we shouldn't have pried.” She really did sound sorry, but Katsuki was already pissed.

“There's nothing wrong with his fucking teeth! We can kiss just fine!!” He snapped, letting off a warning explosion.

“But you wanna take the penalty this round instead of giving Kirishima /one/ little kiss?” Katsuki could swear that Kaminari sounded as though he was judging him.

Just because the dumb D-rate battery pack locked lips with his stupid steel boyfriend at every opportunity, regardless of their audience. Tch.

It's not like he and Ei had any problem being affectionate with each other in public. But kissing was…dangerous.

If he was perfectly honest, anything more than sitting close, leaning on one another, or holding hands was kind of dangerous.

A vein in Katsuki’s temple ticked, and he finally turned to catch his boyfriend’s gaze properly.

He watched Eijirou swallow thickly, his tongue sliding along the seam of his lips to wet them as they stared at each other for a long moment, and he knew they were both wondering if they could do this without embarrassing themselves.

The room fell oddly silent and Katsuki point blank refused to look anywhere but at his equally apprehensive boyfriend right then. A couple of seconds ticked by and he heard a distant, almost muffled cough.

“It's-” Eijirou paused to swallow again, “it's only thirty seconds, right?” He reasoned with a nervous laugh.

Katsuki felt his heart rate pick up as he nodded slowly, “easy fucking peasy.” He agreed. Neither of them could resist a challenge, but this one would be tough.

Though not for the reasons any of their classmates were probably thinking.

He shifted and leaned forward as Kiri did, meeting him halfway, both of them already completely focused on the other as their eyes slipped closed. As Katsuki felt Eijirou’s warm breath against his lips he realised that this was going to be harder than either of them had thought.

But he already didn't care - his boyfriend’s soft lips were /right there/.

He closed the distance between them in a second.

Eijirou tensed before relaxing, immediately releasing a short breath through his nose that washed over Katsuki's cheek as he tilted his head to knead their lips together.

The kiss was soft, almost chaste, but they both knew that wouldn't last long.

It never did.

And hell, the feel of being connected only at the mouth was already a sweet kind of torture all its own. Katsuki pressed closer, he couldn't help himself.

Eijirou responded with another sharp breath as he always did, and parted his lips to slide his tongue against Bakugou's, a hand reaching to settle lightly on the blond's hip as he leaned in even closer.

Katsuki tensed, his own hand shooting instinctively forward to fist the front of his boyfriend’s cheerfully red shirt and yank him closer still.

“/Hnn/-”

They both froze, Eijirou's surprised moan filling their joined mouths in a rush. Katsuki found his other hand buried in the redhead's hair in less than a second, a low groan breaking from him as he licked into his boyfriend's mouth possessively.

The tone of the kiss changed, sinking, deepening to something much more intimate as they melted into each other with another hot, intermingled breath.

It shifted from soft and sweet, to raw and almost abrasive as Katsuki sucked Eijirou's tongue into his mouth and felt hardened fingers dig suddenly into his scalp and jerk his head to tilt at a better angle.

Sharp teeth teased and then nipped at Katsuki's bottom lip, drawing a low groan from him as he felt his palms begin to smoke.

He slid the hand he had fisted in his boyfriend’s hair down and down to cup and squeeze at a firm pec, unable to stop himself biting back and deepening the kiss.

“Holy shit…”

Katsuki heard someone whisper distantly, but disregarded the voice immediately when he felt Kirishima's hands drop to palm at his hips.

He growled, shifting to his knees to grab at his boyfriend's shoulders and shove. Eijirou fell back from his own kneeling position, ass thudding against carpet as Bakugou swallowed his gasp of shock.

They both moaned as Katsuki pushed harder, practically straddling the redhead's thick thighs as he followed Ei down, lips still locked.

He was hard, they both were. And nothing would ever be better than knowing just how much a kiss could undo them both. Eijirou's mouth had always driven Katsuki crazy, even before they had become an item.

The redhead's soft lips and hot tongue contrasted his sharp teeth so deliciously that he /still/ dreamed about them almost every night, despite the fact that he could touch and kiss his best friend whenever he wanted to now.

Katsuki felt need, the likes of which he never had before Eijirou, course through him and barely stopped himself from grinding down in his boyfriend's lap as the sound of a timer buzzed and was quickly shut off with a whispered curse.

Fuck.

Oh shit, they'd fucked up hadn’t they?

But a low rumbling groan of frustration broke from Eijirou and he almost completely disregarded their audience for a second as he felt the redhead's fingers tighten on his hips and try to pull him down as he ground up.

He broke the kiss and Kirishima tried to follow, lips sheened with their combined saliva as he gave a pant of near desperation.

“Please-”

“We’ve gotta go. /Now/.” Katsuki growled lowly. He knew he wasn't gonna be able to keep his hands off Eijirou much longer and he didn't give a /shit/ about the silently shocked extras around them. He tugged red cotton insistently as he shifted back.

A look of realisation fell over Eijirou's face and he made to turn his head and probably apologise, but Katsuki grabbed his jaw and kept his eyes on him, “come /on/.” He insisted, rising to a stand and offering his boyfriend a hand to stand.

Eijirou slapped a palm against his forearm and Katsuki yanked him up.

They were both grinning as they bolted for the hallway, hard and excited and completely uncaring of the consequences of almost getting too carried away in front of half their class because of a pretty innocent game of spin the bottle and a thirty second kiss.

As they rounded the corner Katsuki found his back slammed against the wall, Eijirou already mouthing at his neck, sharp teeth teasing as the redhead shoved a hand between them to palm at his hard cock.

He shoved his thigh between Bakugou’s legs and ground his hips forward, groaning, “/I'm not gonna make it upstairs/.” He gasped, “/I need/-”

“Shit-” Katsuki cursed, palms sweating as he grabbed at tense biceps, “bathroom. We can make it to the bathroom.” He assured. Their friends could probably still fucking /hear/ them, they’d barely made it around the corner.

He grabbed the front of his boyfriend’s shirt in a tight fist and fought not to grind his hips forward one last time as he stepped to the side, tugging insistently, “/come on/.” He panted, already stalking towards the boy’s bathroom.

They barely made it inside before they were kissing desperately again. Katsuki snatched at the button and zip of the redhead's jeans and shoved them down as he pressed forward, feeling his own thighs bare as his sweats yanked down too.

He shoved his hips forward immediately and swallowed Eijirou's low groan when rough fingers dug indents into his hips and ass as his boyfriend sank down the tiled wall, taking him with him.

Their cocks pressed together and Eijirou hissed in a sharp breath, snatching at one leg of Katsuki’s sweatpants to free his leg completely.

Katsuki straddled tanned thighs and dropped his head forward to smash his face against the redhead's shoulder. He wasn't gonna last long.

Neither of them were.

“Fuck, Katsuki-” Eijirou whined, his head snapping back to thud against tile as he bared his teeth and screwed up his face, “I love you.” He gasped, hips bucking up desperately as Katsuki set to rocking his own hips, rutting against him.

“Love you too.” He growled, wrapping a hot hand around both of their leaking cocks to fist them together roughly. They had to be quick, they couldn't get fucking caught like this, even if it wouldn't stop them from finishing.

He didn't give a shit if someone saw them this lost to one another. But they had to at least /try/ to be responsible, they were going to be heroes.

Hence why they didn't kiss in front of others.

They lost themselves /far/ too easily.

And that wasn't how heroes behaved.

But it was too good, too damned easy for Katsuki to get swept away in the feel of Eijirou's mouth, the heated touch of his finger tips, the hard, heaviness of his cock.

“/Why you gotta be so perfect, bastard/?” He panted, no heat to his words. He ground forward faster, rutting harder as he threw his head back, baring his teeth.

/Close. So fucking close already/.

“/Was. Was gonna ask you the same thing- like that, fuck, like that. I'm almost there/-” +

+ Eijirou groaned, his voice cracking as he wrapped both arms around Katsuki’s back and shoved his face between his pecs, forearms suddenly a jagged vice as he practically ground Katsuki in his lap.

Katsuki felt himself hurtling towards the edge and slammed the hand not wrapped around their cocks against the wall.

He tried to hold off, just a bit, /just a few fucking seconds/ until his boyfriend came, but Eijirou opened his mouth and cried out against his vest clad pec, whole body tensing before sharp teeth sank into pale flesh and the cock against his pulsed.

Katsuki lost his internal battle instantly, come pumping from him as Eijirou came too, ruining both their shirts. Fuck. They hadn't even thought to take them off. He collapsed limply against his best friend, breath sawing in and out of his lungs as he tried to catch his bearings.

They stayed, wrapped around each other against the wall in the dorm's communal bathroom until Katsuki sat back, lifting a hand soaked with their intermingled release to see just how much they'd come.

/A lot/.

He felt a breathless grin slash his face as he shifted back a little more, “we've gotta get outta here before someone comes in.” He panted.

“Right.” Eijirou agreed, panting just as heavily, finally dropping his arms, “we /really/ need to work on our self control.” He grinned breathlessly. He didn't even look remotely sorry right then.

Katsuki snorted as he stood on shaky legs and one handedly pulled up his trousers, “tch. Only way is to fuck it out of us, right? Wanna flip a coin for who tops first again?” He suggested as he moved to wash his hands.

Eijirou crowded against his back a moment later and kissed his neck, shoving his hands beneath the water beside his, “of course. Wanna go now?” +

He murmured against Katsuki’s shoulder and they locked eyes in the mirror, two sets of red eyes lighting up again.

“/Obviously/.” Katsuki grinned, already excited.

END

I literally just put this up on ao3, if you'd like to read it with proper formatting or leave me a permanent comment that I can read forever

https://archiveofourown.org/works/24145705