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Early Saturday morning, too early for Kirishima’s liking, an alarm went off. He groaned and rolled over before suddenly jolting up. Wait. That wasn't his alarm, why was Bakugou’s alarm going off in his room. He rubbed at his eyes desperate to blink away the blurriness in his vision only for Bakugou’s room to come into focus. Why was he in Bakugou’s room? They’d been studying in his room last night and Bakugou had gone to his own room when they were done. He ran his fingers through his hair as he desperately tried to remember the night before in more detail only to be derailed by a familiar yet foreign feeling between his fingers. He jumped out of bed and rushed to the full-length mirror hanging from Bakugou’s closet.
“Oh no, no no no.” Kirishima whispered to himself as he stared into familiar ruby eyes. Bakugou was going to be pissed. Admittedly being in Bakugou’s body wasn't as strange as seeing the reflection of himself while not being himself. Weirder still was how soft Bakugou’s face looked. Even as Kirishima worried his lip, the usual tension in the blond's face was gone. Cock twitching, Kirishima felt his stomach swoop with guilt as his hand reflexively reached for his morning wood. He pulled his hand away and gripped his shirt hem. No he couldn't do that, this was still Bakugou’s body, it would be wrong of him. Right? Right. He pulled himself away from the reflection. Fuck he really needed to pee. Would touching it to pee still be wrong? Probably.
He rushed to Bakugou’s bathroom, dropped his pants and sat on the toilet. Shit… okay not wiping after taking a piss with your bro’s body has to be worse than touching it. Bakugou would definitely kill him if he didn’t keep clean. He took a deep breath to steady himself as he grabbed a bit of toilet paper. He could do this. It doesn't have to be weird. Well any weirder than it already was. The instant that he grabbed it to clean up he had to bite back a moan. Fuck why was Bakugou so sensitive. Ignoring the burning need for stimulation, he cleaned up as best as he could. After washing his hands he stepped out into the hall and knocked on his door.
“Bakugou.” *Knock knock* “Bakugou, bro I need you to wake up.” *Knock knock*
“The fuck do you want shitty hair.” Bakugou swung the door open, still rubbing the sleep from his eyes. The second his eyes met his own face wearing a sheepish expression it felt like time stopped. “What the fuck?”
“We ah, seem to have swapped bodies.” Kirishima gave an awkward smile that looked so out of place on Bakugou’s face.
Without giving himself a chance to think, Bakugou gripped the font of Kirishima’s (his own black) shirt and yanked him into the room. After exhaling slowly Bakugou sat down on the bed. This was bad, this was really bad. Out of all the people to get swapped with it had to be his crush. He took a second to take in the awkward way his body looked with Kirishima at the wheel. He almost choked on his tongue when he noticed the hard on Kirishima was sporting. “Why didn't you take care of that before coming over here?”
Kirishima covered his face, blush turning scarlet, “It didn't feel right to touch your body without your consent.”
“‘S not gonna go away anytime soon unless you do something about it. My body’s an asshole like that.” Bakugou sighed softly, resting his head in his hands, still trying to wrap his mind around the situation “Plus it’s alright if it’s you.”
Kirishima’s knees buckled, dropping him to the floor at Bakugou’s feet, well technically his own feet. God this was strange. It was so strange to look up into his own face twisted in an expression so viscerally Bakugou all he could do was whimper.
“Kirishima,” Bakugou ran his fingers through familiar fluffy blond locks before cupping his own loaned out face “you're allowed to touch my body but since we’re here, let me show you what I like.”
“Baku/?” Kirishima was cut off by Bakugou pressing his foot to his crotch, his hands flew to wrap around a familiar ankle as his head fell to rest against a muscular thigh. He groaned, rolling his hips involuntarily into the pressure.
“When we switch back I want you to do this to me.” Bakugou tugged lightly on the ash blond locks.
A wanton moan ripped from Kirishima’s chest, feeling his hole throb. He couldn’t help the way his hips rocked, grinding his cock against Bakugou’s, his own?, bare foot.
“Fuck, you look so pretty as me. I wonder if I'll look half as good as you do in my skin.” Bakugou sighed, scratching lightly at Kirishima’s scalp
“This.. doesn't feel real,” Kirishima whispered ruby eyes half lidded “feels like a dream.”
“Mm, yeah… it does.” Bakugou leaned in close to examine Kirishima’s expressions on his own face, “Is it a good dream?”
“The best.” Kirishima murmured, face impossibly soft.
“Good.” Bakugou smirked, sharp teeth peeking out. It looked almost alien to see his own brows lax instead of pinched together, to see his lips slack and eyes half lidded. Is that how he looked when he’d take care of himself in the privacy of his room? Maybe he should watch himself in the mirror because it was a damn good look. Was that vain? Probably.
A soft whine escaped Kirishima’s lips as his eyes zeroed in on the strain in Bakugou’s, /his/, gray sweats. He trailed his clammy hands up a very familiar leg before untying the string at the top.
“Shit.” Bakugou hissed as his warm flushed borrowed cock met the cold air only to be immediately engulfed in an almost too hot mouth.
Kirishima proceeded to suck his own cock with a ferver, using all the things he’d learned he liked in the few experiences he’s had.
“God fuck that’s good.” Bakugou groaned, hips bucking up forcing the tip of his cock down Kirishima’s throat. Never had he been so glad to not have a gag reflex.
A moan reverberated, sending vibrations up the leaking length shoved in Kirishima’s throat.
“Oh shit, hum baby, hum for me. Fuck that feels so damn good.”
‘Baby? Oh my god.’ Had Bakugou actually called him baby? Kirishima took his cock to the base, buried his nose in thick curly black hair and hummed softly. Eyes closed tightly he let himself get lost in his own earthy scent.
“Fuckfuckfuck.” Bakugou firmly gripped a handful of ash blond hair and yanked him off. “On the bed now.” he growled a feral look in his eyes
“Bakugou?” Kirishima panted, still dazed and not really understanding why Bakugou pulled him off.
“Call me Katsuki, please. I think we’ve passed the point of using last names, Eijirou.”
All Kirishima could manage was a whimper as Bakugou easily manhandled him up and into the bed.
“Do you have lube?” Bakugou pressed soft feather light kisses to Kirishima’s neck
“Desk, bottom drawer.”
“Usually I bottom so it shouldn't take much prep even with this monster that you've been hiding from me.” Bakugou shuffled through the drawer until he found the little bottle.
“Didn’t think you wanted.”
“Oh baby, I want all right. After we switch back, this cock belongs to me.” Bakugou pointedly gripped the cock he was borrowing. “Got it?”
“Got it.” Kirishima panted softly
“Good. Don’t go forgetting it after, because I’m about to fuck your brains out.” Confidently, Bakugou crawled back over Kirishima, caging him against the bed.
“Please Katsuki.” Kirishima whined, gripping the sheets in an attempt to ground himself.
“Don’t worry baby. I’ll take great care of you.” Bakugou cooed softly, “Show you exactly how I like it.” pulling off both of their sweats, he pressed kisses across Kirishima’s hips zeroing in on his favorite sweet spot, giving it one hard suck.
“KATSUKI~” Kirishima whined high and needy his hands shooting into thick red hair
“Mm~ yeah feels good don’t it?” A satisfied smirk spread across Bakugou’s face.
“Mmhm” Kirishima nodded, enthusiastically pulling Bakugou’s face back down to that spot again.
Bakugou chuckled softly as he continued to lick and suck on the spot by his hip, leaving the skin an vibrant shade of red. He uncapped the lube, coating his fingers generously. Gently, but not slowly, he plunged two fingers in crooking them to press against the needy bundle of nerves.
“Katsuki, Katsuki~” Kirishima whimpered over and over, fingers tangled in wild red hair. His skin was on fire, a slick sheen of sweat collecting on his body.
“Got you all worked up now huh?” Bakugou smirked before licking a fat wet stripe up the middle of his borrowed abs
“KAT!” Kirishima yelped “Not cool!”
“But I taste so good.” Bakugou licked his lips, “You should try it.” he slid his free hand across damp plush pecs before shoving three fingers into Kirishima’s mouth, rubbing them roughly against his tongue
A lewd moan bubbled up Kirishima’s throat as he sucked on /his own/ fingers. The thick rough digits felt at home in his mouth. He swirled his tongue around them taking in the strangely sweet and salty flavor.
“Good boy Ei~” Bakugou praised, scissoring his fingers to stretch the tight ring of muscle. Fortunately it didn’t take long for it to give to the intrusion. “Gonna fuck you now baby.” he gently pulled his fingers out and lined himself up. Ever so slowly he pressed in, letting inch after inch after inch get sucked in. Pleasure set fire to his nerves building a little too high, a little too close but he pressed on single mindedly. Spurred on by the overwhelming need for intimacy, he captured the others lips in a passionate kiss. He rocked his hips gently, more grinding than proper thrusts but it was perfect.
Moaning straight into Bakugou’s mouth, Kirishima matched his pace as much as he could. Occasionally he’d tilt his hips just right to get Bakugou to grind directly against his prostate making whine. He wanted more of that incredible feeling but he couldn’t seem to keep that angle. With a pitiful whimper and a slightly too hard bite to Bakugou’s lip, he got what he needed.
“Ouch, fucking brat, that hurt.” Bakugou chuckled, his voice lacking the usual heat. “If you need help you’re allowed to ask.” he grabbed a pillow from the head of the bed and sat back a bit. He lifted Kirishima’s hips and stuffed the pillow under him before laying back on top. “Better baby?” he whispered sweetly with a roll of his hips
“Yesyesyes, fuck, right there!” Kirishima whined high and needy as Bakugou picked up to a proper pace, slamming repeatedly into the sensitive bundle of nerves.
“Shit ‘m not gonna last much longer, you close? I wanna cum with you.” Bakugou growled softly, his thrusts becoming erratic, bordering on frantic.
“Close” Kirishima nodded, pulling Bakugou in for another passionate kiss. Euphoria flooded his senses, his hole clenching and thighs shaking.
“So tight fuck.” Bakugou grunted, eyes squeezed shut. The way the hole milked him tipped him over the edge. The pleasure was too much, dizzying in its force.
A loud whine ripped itself from Kirishima’s chest when suddenly there was heat wrapped tight around his cock. Too warm and wet to be a hand he cracked his eyes open only to realize he was peering down at a blissed out face with ash blond hair. The visual itself was enough to have another little shock wave of pleasure zip through him, his cock spurting out more cum into the puffy pink hole.
“Holy fuck.” The sudden sensation of being stuffed full while mid orgasm left Bakugou breathless. He willed his eyes open and almost choked on his spit, red hair draped down to frame hungry crimson eyes, part lips, shiny and kiss swollen, and a flush so fierce it bled down to a broad chest. Yup, he made up his mind. Despite how much he loved looking at his own face twisted with pleasure, being able to see Kirishima was a million times better. “Please tell me you can go another round.”
“Right this second? Probably not.” Kirishima chuckled, pressing a kiss to Bakugou’s jaw as he slowly slipped out. “Just give me like five minutes. Want some water?”
“Yeah, you left my throat pretty dry.” Bakugou teased, playfully shoving Kirishima, pointedly ignoring the cum leaking from his ass.
“Sorry man.” Kirishima laughed as he grabbed a glass of water from the sink and a towel
“‘S fine, it was worth it.” Bakugou smirked
“I’m glad.” Kirishima smiled warmly, handing Bakugou the glass he proceeded to wipe up the sweat and cum off of him.
Bakugou took a sip of water and cleared his throat. “You have any plans today?”
“I’m meeting up with Tetsutetsu at the gym later, why?” Kirishima raised an eyebrow skeptically
“Cancel, you're mine now and I want to play with my new toy~” A feral glint simmering in those ruby eyes as Bakugou set the glass down on the bedside table “Wanna see if I can break it~” he licked his lips seductively
“That is as terrifying as it is sexy, “Kirishima smirked, leaning in to press a kiss to the top of Bakugou’s head “I’m down.”
“Perfect~” Bakugou drawled as he pulled Kirishima in for a passionate kiss.