Thread by @kinksuki, krbk; overstimkatsuki got hit with a quirk that makes his own practically [...]

krbk; overstim

katsuki got hit with a quirk that makes his own practically unusable.

the unknown effects seem to have caused the backlash to multiply tenfold from how it usually feels. right now, even a small pop feels like it will blow his arm clean off.

but that’s not it.

on the lighter side—some may argue, he will not—it also makes him more sensitive to other forms of aches and throbs.

all it took was seeing his best friend unbutton his uniform blazer to make a wave of butterflies crash through his body, leaving him to cling to the wall.

“bakugou, are you alright?” eijirou asked, reaching one hand out for him as katsuki’s nails scratched into the paint.

there’s a warmth pooling in his stomach, and as his eyes rake over eijirou’s body, it only worsens.

“don’t touch me.” he grit out, afraid of what might happen.

it’s not as if he didn’t already know there was something about the redhead that made him feel different from others.

whether it’s from being his first real friend in a long time, or something deeper that he’s trying not to dig into, he’s unsure.

all feelings are confusing.

the ones surrounding eijirou’s kind smile in particular are some of the most difficult to unravel, rivalling even his fucked up friendship with izuku.

so he needs to stay away, far away, until the quirk wears off.

but as always, eijirou doesn’t listen. he doesn’t care.

instead, a rough palm grasped his arm to help him stand on his own two feet.

immediately, his legs are shaking from the painful throb between his legs, and he clung to eijirou’s body for dear life as he choked on a moan.

“b-bro?”

“i s-said... not to f-fucking touch me...”

it’s embarrassing.

not only did some extra manage to use their stupid power on him without him realizing it, but now eijirou’s unlocking feelings in him that he didn’t even know existed.

even with the cool air conditioner in his room, he’s sweating buckets down his forehead.

“you’re feverish. flushed.” eijirou murmured, one hand brushing his forehead. “do you need water? is there any bottles in your mini fridge?”

katsuki locked his arms around his friend’s neck, using him to support his weight as another bittersweet throb cause his knees to buckle.

“you... stay still.” he demanded, hiding his face into his neck as heat began to seep into his cheeks, turning the pale flesh scarlet.

“b-bakugou, what’s in your pocket that’s—“

katsuki whined when eijirou’s thigh brushed his hardened cock, and he could hear the other swallow.

“o-oh...”

tears brimmed his eyes as humiliation pooled in his stomach heavy enough to make him want to vomit, and he pulled on eijirou’s jacket as a sharp throb spiked through him.

taken back, eijirou stumbled backwards, his knees buckling when they hit katsuki’s mattress.

“y-you... that’s your... oh god...” he stammered nervously as they fell on top of the bed together. “i’m s-sorry, bakugou... i—“

katsuki swallowed his own disgust over the mix of pain and pleasure brewing inside his body, and then pried his face from eijirou’s chest.

while looking up at him, he unclasped his hands from their grip on his friend’s blazer, instead deciding to press both against his duvet on either side of eijirou’s head.

“y-you’re crying... is it me?” he murmured, and katsuki rolled his eyes as his lip trembled with anxiety.

“it hurts.” he confessed, and two hands wrapped around his waist. “fuck, every-every throb feels like i’m going to explode on the s-spot. i can’t even stand upright, k-kirishima.”

eijirou’s eyes widened at the use of his name accompanied by the stray tear rolling down his cheek.

“m-maybe you should see recovery girl,” he stammered out, making his stomach twist painfully at the thought.

“there’s nothing she can do,” he forced out as a wave of hot pain rolled through his body. “i-it’s quirk induced, idiot. she’s... she’s useless right now.”

eijirou’s adam’s apple bobbed, and he turned his head to look away from him.

“bakugou... i-i can’t... what am i supposed to do?” he asked. “you’re looking at me like-like you want me to fix it.”

“you touched me first.” katsuki reminded him, and then raised one leg higher.

his left knee pressed into the bed, and he carried his weight on it before lifting the other on the opposite side of eijirou’s hips.

“h-hey! what’re you... what is this p-position?” his friend rushed. “k-katsuki, you’re s-sitting... you—“

a breath of relief left katsuki’s lips.

he’s hard too, meaning this feeling of want could be mutual.

eijirou’s just trying his best to preserve their friendship before they cross a line they can’t come back from.

but maybe...

katsuki squeezed his eyes in frustration as he yelled at nothing. at no one but himself.

maybe he wants to cross that line with him, even if he also doesn’t want to out of pride and fear of leaving his comfort zone.

“b-bakugou?”

the hands on his waist tightened, and katsuki’s body locked as it came to life with a newfound heat.

“t-touch me.” he forced out.

eijirou’s hands didn’t move, and he looked down at him as he fisted his blankets.

“bakugou, y-you... we’re friends.” he exhaled heavily. “i-i can’t... we shouldn’t... you aren’t thinking right and i’m—“

“s-so hard.” he cut him off while rubbing his ass up against his bulge.

“you’re so hard,” he whispered, and eijirou looked up at the ceiling as he pressed his head into the mattress. “kirishima, fucking touch me. my-my cock’s going to explode. i can’t take it. i-i can’t fucking take it.”

as he mulls the words over in his head, he sounds desperate.

it makes him feel disgusted with himself, but he has no time to think about it when eijirou’s hips jerk upwards.

the sudden pressure makes a tingle burn through his veins, and katsuki whimpered, his teeth tearing into his bottom lip at the overwhelming feeling taking over.

“don’t regret this.” the redhead said, and katsuki clenched his jaw. “fuck, bakugou... please don’t regret this when all is said and done.”

“just shut up and fucking touch me.” he snapped weakly, and eijirou’s hands left his body to begin unbuttoning his uniform shirt.

a shiver inched it’s way up his spine, and katsuki reached one hand to his own chest so he could get his shirt off faster.

“can you tell me what’s happening?” eijirou asked softly, and he hung his head as he tried catching the breath that was stolen from his lungs.

“everything... i feel it.” he explained, tearing his shirt off the second the last button popped open. “every throb feels like-like i’m going to fucking combust. every tingle is... is mind numbing.”

eijirou’s hands held his chest, and katsuki cupped a hand over his knuckles.

“if it hurts,—“

“it feels like i’m dying.” he nodded, feeling like putty in the palm of his hand when he squeezed tights.

eijirou mumbled something under his breath, and katsuki rocked his hips forward, trying not to crumble on top of him as his arm shakes under his weight.

“so if you feel good...”

katsuki met his eyes, and then looked down at his uncomfortably tight pants, a darkened spot of fabric by the head of his cock.

“then you’ll /really/ feel good.” eijirou reasoned, and he nodded once again.

“y-yeah, that‘s the point.” he muttered.

his hands left his chest, and katsuki fought the urge to whimper over the loss of contact.

“i’ll take such good care of you...” eijirou promised him, sliding his down to the sides of his waist before pushing.

“h-hey—“

he grunted as they rolled over, then looked up at him.

if katsuki didn’t know any better, while watching his best friend shed his blazer and loosen his tie, he could hear the racing of his heart. possibly even feel each pump as it slams against his ribcage.

“i’ve wanted to touch you for so long.” eijirou confessed to him.

“leave the tie.” he instructed, and eijirou quirked an eyebrow upwards as his hands rushed to take his shirt off.

raising one weak arm, katsuki grasped the scarlet end, then twirled the fabric around his fist before pulling.

“give me some control.” he mumbled quietly.

“bakugou... i-i wish we could have done this diff—”

two hands reached for his belt, and he rolled his hips closer, desperate for a more intimate touch than just a brush or graze.

”shut up and fucking kiss me.” he hissed, pulling on the tie again and leaving no room to fight.

eijirou tugged on his pants, and katsuki slammed their lips together, the force hard enough to feel as if he had just been punched in the mouth.

“are you a masochist? don’t do that...” the other grumbled, and katsuki ignored the question in favor of biting down in eijirou’s lip.

‘maybe this would shut him up,’ is his thought, but it only ends in him moaning into his mouth and cupping his thighs as his pants fall on to his bedroom floor.

he tastes of candy, and it makes katsuki want to explore his mouth deeper despite the threat of his sharp teeth.

just thinking about getting nicked by one is making his skin crawl uncomfortably.

under normal circumstances, it probably wouldn’t hurt. but as he is, he’s sure it’d probably feel like getting stabbed.

the thought of having to hold back from eijirou almost makes him sad.

not even fifteen seconds into the kiss, katsuki’s pulling away and gasping for air as if he had been holding his breath for hours.

“relax.” eijirou said, and katsuki squeezed his eyes shut as the ghost of a fingertip trailed along his bare thigh.

“o-oh fuck...” he whined..

“i’m gonna touch you now—“

“yes. god, yes.” katsuki practically begged, and then felt his entire body jolt as eijirou’s large hand cupped him through his briefs.

his eyes squeezed shut almost immediately, and he reached one hand above his head to pull on his blankets.

“k-kirishima,” came his broken hiccup when he squeezed, “fuck... f-fuck...”

fresh tears brimmed his eyes, and when eijirou’s hand pressed harder, grinding down on to his oversensitive cock, he cried out.

“you’re falling apart at the seams, and i... i just barely touched you.”

with a lazy roll of his eyes, katsuki pushed his hips closer to the hand palming his aching cock, trying to ignore just how ridiculous he must look and sound.

crying and begging weren’t parts of his daily life, yet here he is, sobbing from the littlest bits of pleasure.

of course eijirou would have a field day with it, mocking him, committing this vision to memory.

“you’ll never s-see me like this again.” he assured, and eijirou’s soft smile fell into a frown.

“i guess i just have to milk this moment then. your body can take it, right?”

‘what’s that supposed to mean,’ is katsuki’s initial reaction as eijirou leans over him.

his second being, ‘why does he looks so bothered?’

after all, eijirou knows him. he knows what he’s like and this breathless, trembling mess that can hardly speak is not it.

without warning, the hand around his cock pressed down harder, and katsuki slammed a hand over his mouth as his cock twitched painfully.

“i said... your body can take it, can’t it?” eijirou repeated, and he shivered when soft lips brushed his neck.

“it can. i-i can.” he argued.

he thinks.

maybe?

orgasms were already powerful, but with this quirk? with it’s rush multiplied tenfold underneath his skin?

even if he couldn’t take it, he sure as hell is going to try until he can’t anymore.

“that’s what i lo—like, most about you... always so confident.”

again, just what does he mean by saying stuff like that?

katsuki spread his legs further, giving him more space to sit between as eijirou’s other hand lifted his hips higher.

“w-what are you going to do?” he asked, and eijirou thrusted his hips directly against his aching cock.

the entirety of his body twitched from the one movement, and he moaned quietly.

“i’m just going to make you feel so damn good that you’re going to think you’re dying.” he promised, and katsuki’s back arched off of the bed as the hand on his hip began to tug his briefs down.

he’s scared—no... intimidated.

katsuki bakugou has never been scared in his life, but being intimidated by something is different.

it’s not as if he’s ever done something like this with someone else, or felt this strongly for anyone before.

“just lay back, bakugou.”

katsuki gasped as his teeth grazed his skin ever so softly, and then buried his hand into his hair before pulling.

“k-kirishima...” he trailed off, feeling his briefs cling tight just below his thighs. “wait, w-wait...—“

his voice caught in his throat as his eyes widened.

immediately, eijirou’s wrapping his fingers around his bare cock, his thumb pressed hard against the leaking head.

“you’re so hard,” eijirou murmured, and katsuki yanked on his hair as every word he wanted to say suddenly left his tongue.

“i can feel you throbbing in my hand.”

slowly, his fist twisted, and katsuki’s legs jerked, trying to hide himself from the overwhelming pleasure stirring up inside of his body.

“y-you can’t—k-kirishima, i—“

once he began to slide his hand, using the mess of precum to his advantage, katsuki’s thighs tensed.

“are you going to cum already?” eijirou whispered into his ear, and katsuki wrapped one leg around his waist, digging his heel into the space just above his belt.

“n-no,” he tried to convince him, but the break in his voice only made the other chuckle.

“it’s okay if you are.”

his fist sped up, and katsuki’s toes curled as he pulled his body closer with his weak leg.

“you can cum for me, bakugou.” he encouraged, and katsuki clung to his body, balls tightening painfully when eijirou’s other hand cupped them. “just let yourself go. i’ve got you...”

it’s too much.

the heat of his friend’s breath as it tickles his ear and bittersweet pleasure wracking through every nerve was too much to handle.

“i-i can’t—“ choking, it was impossible to finish his sentence as eijirou quickened his pace.

“shh... the whole will hear you.”

katsuki’s fingers scratched down eijirou’s neck and towards his back, catching on the collar of the shirt he had yet to dispose of.

when it’s in ribbons from his nails, it’ll be his own fault for not taking it off.

“slow, go s-slower, k-kirishima!” his voice raised in pitch.

“faster?”

“no! no no n-no, oh god. o-oh fuck, oh fuck.” he cried, attempting to move his hips away from the hand assaulting his cock with fast, brutal tugs. “fuck! i-i’m gonna cum!”

tears brimmed his eyes as his orgasm ripped through his body, every muscle drawing tight.

eijirou’s fingers squeezed around his throbbing balls, rolling them around in his palm and causing katsuki to pull on his shirt hard enough to hear the stitching rip.

“stop, s-stop, stop,” he rambled, sweat rolling down his forehead as an ache formed in his lungs from gasping.

the hand on his cock paused, and katsuki’s stomach coiled as he practically sat up off of his bed, violently jerking forward.

one of eijirou’s hands immediately pressed against his back, supporting his weight as he sobbed over his orgasm.

“bakugou, you gotta be quiet...”

it went in one ear and out the other, leaving eijirou to mutter under his breath before pressing their lips together.

“i’ve got you.” he promised, and katsuki could feel the hot ropes of cum splash against his thighs and stomach as his cock was milked for every drop.

“k-kirish-shima—”

hiccuping, katsuki was cut off immediately by a tongue pressing flat against his, leaving a shiver to run up his spine.

using the new found slick, eijirou’s hands tightened into a vice-like grip, knocking the rest of the breath out of his lungs.

“n-no,” he shook his head, eyes half lidded in exhaust. “i-i can’t. not-not again. kirishim-ma...—“

“just once more.” eijirou grinned, looking down at him with a glint of mischief in his darkened eyes. “i want to see more of you feeling good... more of you crying out for me.”

“you’re gonna... oh f-fuck, you’re gonna break me.” he whimpered, shifting on his bed in another futile attempt to escape. “i-i can’t—it’s too much. my c-cock’s too sensitive—kirishima!”

his jaw dropped, saliva drolling down the corner of his mouth as he writhed in his hold.

“let me savor this moment with you.” eijirou murmured, but katsuki’s mind is too blank to even register what that could mean as his body is subjected to yet another round of painfully sweet pleasure.

his heels dug deeper into eijirou’s back, and he buried his face into his neck.

biting down, katsuki muffled his own voice as his aching cock was jerked, not even a second granted to him for a breath.

“fuck,” eijirou groaned at the sharp sting of his sharp canines breaking flesh, “hah... you’re shaking, baby... does it feel good?”

he nodded quickly.

“i bet it’ll feel even better if i were to use my mouth...—“

“no.” he choked, and eijirou‘s hand left his back to pull him closer to the edge of the bed. “no, you-you can’t! you can’t! i can’t t-take it.”

“oh? but you said you could.” eijirou teased, and katsuki whined.

slowly, the other pulled away, and katsuki watched as his friend pulled on his legs.

“i asked you if you could, and you said yes.”

he weakly kicked at eijirou’s chest, both hands now gripping the blanket for dear life.

“you’re gonna kill me.” he said, and looked down at him.

eijirou’s sitting between his legs, situated comfortably on his knees with one hand still pumping his cock and the other nowhere to be felt.

“didn’t i say i’d make you feel so good that it’d feel like you’re dying?” he taunted, and katsuki’s stomach tightened as his leg jerked.

a hot breath fanned over his cock, and his eyes rolled back in pleasure when the hot tip of eijirou’s tongue traced the throbbing vein along the underside of his cock.

“mm...” he hummed, and katsuki pulled on his blankets as another wave of smothering heat washed over him.

“you taste so good... i want more of it.” eijirou said, swirling his tongue around the crimson head as his hand twisted around the base.

“too much.” he repeated, the muscles in his thighs aching as they tensed. “i-it’s too much, you-you’re gonna k-kill me, idiot.”

katsuki chomped down on his tongue when a pair of soft, plush lips curled around the head and sucked. the muffled sound of his scream never leaving his sealed lips.

eijirou’s cheeks hollowed as head began to bob, and his leg kicked, the point of his just barely missing his face.

katsuki’s foot pressed against his shoulder, and he pushed down hard, unable to stop his body as it tried to get away from the overwhelming feeling.

when eijirou hums, the vibrations cause his head to push deeper into the mattress, tears rolling freely down his hot cheeks.

“k-kiri...” he gasped brokenly, choking on his own spit as it pooled in his mouth. “o-oh my—fuck. fuck. sh-shit. shit...”

one of his hands grasped a fistful of crimson locks, and he pulled hard enough to have eijirou whimper around his cock.

“i’m gonna cum.” he wheezed.

the burn in his lungs has yet to leave, and the erratic pacing of his breaths making his chest hurt.

“i-i’m gonna cum.” katsuki repeated louder, and eijirou forced his cock deeper into his mouth until the walls of his throat was tightening around the head.

“o-oh my fucking—“

eijirou swallowed, and katsuki slapped a hand over his own mouth as his hips pushed into the mattress, wanting to get away from his tight throat.

“hurts.” he grit, a heat spreading through his body as his muscles cramped from being tensed for so long. “f-fucking, ki-kirishima—“

the fist around the base of his cock twisted, eijirou moaned around his cock as tears brimmed his own eyes.

forcing himself to look down, katsuki took in the other’s scarlet face and glistening cheeks.

by now, his own sweat has even caused the spikes of his hair to go limp.

“g-god, you look... you look so f-fucking good,” he forced out, and eijirou looked up at him, gloss covering his eyes.

“i’m gonna cum.” his voice raised, still muffled by his hand but loud enough to be understandable. “fucking h-hell, it-it hurts. it hurt s-so good—“

the fist around his cock dropped, and katsuki’s eyes widened when eijirou’s lips kissed the base of his cock, burying every inch inside of his throat.

“i’m-i’m—“

he’s cumming before he could even get the word out, another powerful wave of pleasure smashing through his body.

despite eijirou being between his legs, he tried his best to shut them, a cramp inched up his toes curled painfully tight.

another loud scream flooded the room, and more vibrations began to thrum through the length of his aching cock as eijirou gagged and whimpered around him.

“off.” he begged, pulling hard on his crimson locks as he struggled to catch his breath. to come down from the bliss weighing heavy on his tingling limbs.

there’s even a ringing in his ears, and he could barely hear his own panting as his head lolled to the side.

“i-i c-can’t fucking ta-ake anymore, k-kiri.” he sobbed, his shot voice broken up by shaky breaths. “please... fucking, p-please. you’ll kill me. y-you’ll break me. i can’t—“

eijirou pulled away from him, and he looked over to him through his blurry, half lidded vision.

“please.” he whimpered, aftershocks causing his body to tremble and jerk at even the softest bit of contact. “i-i can’t cum again.”

his own release was dripping down the corner of his mouth, and his face was nearly as red as the hair falling in front of his forehead.

“you’re so good for me.” eijirou panted hoarsely, and katsuki felt his eyes begin to close before they snapped open again. “i wish i could make you cum like that without some-some dumb quirk.”

he stood up, and katsuki’s eyes drifted to the front of his uniform pants.

they’re soiled, he could see where the mess had darkened the fabric.

“y-you...” he wordlessly accused, a violent jerk making his body twist the second eijirou’s hand brushed his inner thigh.

“i... don’t want my-my first time to be with you if you’re not thinking straight...”

he smiled, immediately trying to cover up the sad tone that had just left his rosy lips.

“besides... i don’t want to hurt you.” he said, and katsuki took a deep breath to try and settle the ache in his chest.

“first times hurt, and if-if you’re like this, it’ll be worse.”

eijirou looked around, and then tilted his head as he wiped his mouth with his uniform sleeve.

“and... you don’t like me like that, so i-i don’t want you to—“

“idiot.” he breathed out, and eijirou’s eyes met his. “i-i wouldn’t have gotten like this for just anyone...”

did he really think that? that he felt nothing even after what they did?

“you said so... i’ll never see you like this again.” he reminded him. “so i... i’m sorry if i went to far. i just wanted to hear you scream my name and come undone because of me. i needed it.”

katsuki’s finger curled his finger, motioning him to come forward, to lie on the bed beside him so he could possibly hit him right on the head.

if he could raise his limp arm high enough, that is.

“y-yeah?”

his hand curled around eijirou’s tie again, and he pulled weakly.

“i meant you’ll never see me this... pathetic.” he corrected, and eijirou was careful as he leaned over him, trying not to touch his over sensitive cock. especially with the rough fabric of his pants.

his eyes dropped to eijirou’s swollen bottom lip, and he pulled him closer.

“i... i like you, shitty hair.” he whispered, and eijirou’s eyes widened. “it’s b-because i like you that my body reacted so violently w-without you touching me.”

“can i stay then?” eijirou asked, and katsuki’s lip curled into a snarl.

“if you left right now, i’d kill you.”

eijirou pressed their lips together, and katsuki hummed softly as that familiar, fluttering sensation flooded his aching stomach.

“i like you too... that’s why i... i got myself off. i didn’t want my firsts to be like this.” he murmured, and katsuki chuckled breathlessly.

“so chivalrous...” he teased, and eijirou nodded as he tilted his head up to kiss his sweaty forehead.

“always. that’s my thing.” he reminded him, and katsuki rolled his eyes despite them being closed. “go to sleep if you’re tired, bakugou. i’ve got you.”

“i know you do.”

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