Work Text:
Katsuki wasn't quite sure how he ended up inn this position. He didn't deserve this after he'd been such a shithead. Fuck, he'd told Deku to off himself at one point! He hadn't atoned enough for that yet! Also, he was just a beta—how the fuck was he even able to do anything to help?
And...here he was, laid back on an artfully weaved pile of soft blankets and pillows with an overly warm body snuggled into his side. Unfortunately, as a beta though he couldn't fully appreciate the gentle matcha scent wafting off the fabric. Wait...not, not unfortunately! He was having a hard enough time fighting back his hard on with just the nerd's body so close.
“Kacchan...” Said body grumped and pressed a face harder into his ribs.
“Sorry nerd.” He quickly resumed gently threading his fingers through the omega's hair...soft silky curls...A soft rumbling purr budded up from Deku's chest, vibrating against his leg. Fuck, he looked cute like this. He couldn't help but let his fingers trail down his neck occasionally—though he dutifully avoided the swollen scent glands.
Right. That's how he found his way to this particular nest. Deku cornered him in the locker room. He blinked up at Katsuki with those stupidly beautiful eyes and a rosy blush on his biteable cheeks. “Kacchan?” Indecently, he'd left the front of his hero suit unzipped. Katsuki swallowed hard seeing a sliver of the nerd's plush flesh on display. “I have a favor to ask you...”
How could he say no to that?!
With Deku's pack at their respective work studies, the omega needed the comfort of someone for his heat. A ' snuggle buddy ' he called it. Anyone else he would have turned down, but no one could say 'no' to Deku's puppy dog eyes. So Katsuki decided he'd be the best damn snuggle buddy to the omega and even brought a basket of the nerd's favorite snacks and drinks.
He tried not to regret his decision to become a living body pillow. However, the longer he laid there the more he second guessed his decisions. An omega's body ran hot during a heat and Deku's was no exception. It also seemed like he set the room temp up higher too. Katsuki could feel a slight sheen of sweat on his skin. He started to get a little dizzy too—that or all the blood rushed to his dick. He just prayed Deku didn't notice.
Oddly, the matcha scent grew stronger as time went on—he swore he could almost smell a caramel in the air too. Which didn't make sense, he couldn't remember anyone in Deku's pack with that in their scent. He took a deep inhale in frustration, angry that he couldn't pinpoint who else had been in the nest. Damn beta senses weren't strong enough though.
“Hnf...Hey, Kacchan?” A sleepy mutter drew his attention.
It was a struggle to lift his head. Crap, was he getting sick? His vision blurred a bit but he forced himself to focus on the omega. “...?”
Deku's words came out a bit slurred. “ 's something wrong?”
He cleared his throat, “No, why?”
Green eyes met his, and all he could do for a moment was swallow. Fuck the nerd was beautiful. Glossy eyes...face as red as a strawberry. Shit, right he was asking a question. “You sure? You're not mad or something?”
“I said no, what is it?”
“Dunno,” He dug his nose into the ticklish spot of Katsuki's flank. “Somehow you suddenly smell really good...”
He squirmed against the deep inhales Deku took. His strong fingers dug into his tank to hold him in place. “What the fuck?!” Like a monkey, Deku wrapped around him. He yanked on his thigh—much too close to his junk—and straddled it. “H-hey!” Another hand landed on his chest and groped while Deku sniffed up his body. “What the hell's gotten in to you?!”
Matcha and caramel clouded his nose, and made his head fuzzy. Why the hell was it so hot? Did...what was that smell coming off Deku?
Deku didn't answer but crawled up his body. He threw his hands out to press his face back. “HEY! Get off!” Damn strong omega! It didn't phase him at all! “What do you think you're fuckin' doing?!” His knee was too damn close to Katsuki's hard-on! He'd think Katsuki was a pervert! “Seriously what's your damn problem?--!!”
“HN” A shudder ran through him as Deku's knee ground into his crotch. He lost strength as Deku pulled him closer to push his nose against his arm.
“You smell so good right now...Kacchan...”
His a beta. He doesn't have a smell. “W-what...? GHN! ~”
A hot wet tongue licked a stripe across his skin. The noise Deku made shot straight to his dick. He couldn't focus, couldn't put thoughts together. “Hhha...well, more than usual...”
Katsuki jolted as that tongue wormed up his armpit, while the omega huffed in deep breaths. His body trembled and he tried to pull away, but Deku wouldn't let him go. What—what was happening? Everything felt wrong but each wriggling pass of Deku's tongue sent shocks of pleasure through his system.
“Dek—Izuku...!”
The omega laid on top of him now. He ground a hard on against Katsuki's straining cock with his own. This was a wet dream coming to life. Did Deku even realize what he was doing? “S-stop now...” His jaw started to hurt but before he could fully register it, the omega's face crowded against his. Kissing and sucking the skin of his cheeks. He couldn't stop himself from grabbing back onto the smaller boy. “This is...weird...” He tried again, gasping as he trembled with pleasure and pain. He needed to put a stop to this. “You're also starting to smell...like something...”
Something delicious...
“I shouldn't—nng!” One of the nerd's hands slipped under his shirt and glided across his nipple. He couldn't help but buck up against him. “Wait--”
“Neh Kacchan? Aren't you hot?” Deku's slurred question was the only warning he got before OFA sparked across his skin. He ripped away Katsuki's shirt. A cheerful chirp bubbled out of his throat before he descended on Katsuki's chest with his mouth and tongue.
The blond's head flew back with a gasp. He couldn't find the strength to push him away. Because whenever Deku did something that felt good, it stopped the pain in his jaw, it stopped the growing dizziness, and his guts stopped trying to spill out. But Deku would hate him after this if things went too far! He wouldn't even be allowed to be the nerd's friend let alone pack member!
He took deep inhales to try and gain his bearings. Sweet omegan slick made his mouth water--
Wait. That's wrong. He shouldn't be able to smell slick. Something—something was very wrong with him. He couldn't stay here! He had to get out! Deku smelled too good!
“Nng! 'zuku—hah!” That plush ass rubbing against his crotch did nothing to help his situation.
“Mmf, Kacchan~”
He squinted down at his opponent and spotted his opportunity. Deku went to lift off his own shirt. Katsuki bucked him off and rolled out of the nest to the floor. “Nf—shit!” The world spun but he couldn't stop! He dashed for the dorm door.
His fingers touched the knob-- “Gnnk!”
Hot lightening wrapped around his throat and limbs. He could barely turn his head to see black whip winding around him. With one yank, he flew back onto the bed. A weight landed hard on him.
A uncharacteristic scowl crinkled Deku's face. Sharp little canines threatened him with a curled lip. “That was mean Kacchan.” Oh shit, Deku growling should not be so...so...hot. “You promised you'd stay for my heat...”
“W-wait, Izuku—there's something wrong with me!” Black whip kept him pinned down like a bug. He'd likely be left with bruises once released. “It-it's not safe to be around you right now—ah, ah!”
A wet hot tongue wormed it's way down his abs. “Mmm, Kacchan~ you smell so good right now.”
“Jus-just my quirk, nerd.” He managed to slur out. Fabric ripped again, and he nearly whined in relief as cool air hit his legs. “Stop!”
“Silly Kacchan, you haven't realized yet have you? That's okay I'll help you.”
“Huh? What do y--” His eyes went wide. Where did all of Deku's clothes go?! His freckled ass bobbed in the air as he crouched between Katsuki's spread legs. He nuzzled against his tented boxers. A cheeky grin bloomed on the omega's face—the one when they stole cookies as pups. Deku slipped his fingers into the waist band. “Wait-wait-wait--”
His cock sprung out like a damn jack in the box and slapped the smaller boy in the face...who giggled like it was a big joke! Hot breath cascaded over the head of his cock, “Kacchan's already so big~, that means your knot will be big too right?”
“Knot? Izuku you-you don't know what your saying.” He flinched as Deku crawled back up to sit on his stomach. His little cocklet stood stiff and a wet cunt ground into his pubes. Shit-shit-shit!
“Kacchan, sure I do!” He darted forward to press a kiss to Katsuki's lips, but his eyes were glossy with the throws of heat. “Now alpha, make me feel good~”
Deku reached behind himself to grasp Katsuki's cock. He ignored the cry he let out, and wouldn't let him budge. “Izuku no! You-you need to stop!” Sticky wetness rubbed against his drooling cock head. The omega didn't plan on...?
Without further ado, Deku seated himself completely onto the captive member. Katsuki choked on his spit as tight heat descended around his dick. For a moment he couldn't form any thoughts. He floated in heaven.
The scents of the room flooded his mind. They fit together. Matcha and caramel. Sweat that carried sweet and musky. They were made for each other.
He only came back to his body as Deku rolled his hips. “Ah-ahn! K-kacchan, so big! I'm so full!”
His hands were free, but instead of shoving the nerd off again his twitching palms settled on those full hips. He tried to speak but only an odd sound came out. “Grrnh!” Half way between a growl and purr? Neither of which a beta should be able to make. Katsuki would worry more about it but Deku started fuckin' bouncing.
Plap! Plap! Plap!
Those powerful bunny legs he always wanted wrapped around his head moved with quick pointed power. The noises pouring out of the nerd were pure sin. Little gasps, drawn out moans. Before he knew it, he'd adjusted his feet to thrust up into Deku's hot hole.
“Mmf! Ahn! Ka—alpha! Yes!”
Something in the back of his mind urged him to go harder, deeper! He needed to be in the omega permanently!
He snarled and rolled to switch their positions. He grabbed up those firm thighs and pressed freckled knees up to Deku's ears. He rolled his hips faster and faster, driving into the nerd.
Plap-plap-plap!
Slick pooled between them, splashing each time their hips met. He teeth felt too big for his mouth now. Sweat dripped off his shoulders as he destroyed the omega's cunt. Some feathers flew as the nerd ripped a pillow in half behind his head.
Plap-plap-plap! Plap-plap-plap!
Such a strong omega! So tight! So hot! He wanted—he wanted-- “Grrn!” Why couldn't he get his entire dick in anymore?!
“Please-please-please!” The sweet sounds of begging omega called to him, urged him on. “Want-want your knot, alpha please!”
He buried his nose into the omega's neck, lathing his tongue across swollen glands where that delicious scent poured out from. He couldn't form words. His cock hurt each time he battered it against the hot entrance, but something in him told him to try...
“Nnng! Ah! Grr! Now alpha!” Black whips burst out from the omega. They wrapped around Katsuki's hips in a flash. That omega's strength came out again as he yanked him forward. Whatever kept him from entering completely popped past the lips.
Deku shuddered around him with a scream, his body clenched down on Katsuki's dick as he came. A rush of slick flushed out, and useless cum spurted from his cocklet.
Katsuki's eyes rolled back in his head as something inflated at the base of his member. He came with a roar, shooting ropes of hot cum deep into the omega's waiting womb.
The world went fuzzy to his ears as he kept cumming. Every little twitch from Izuku made another flood of cum pour out of him. He blearily blinked down at the once flat freckled tummy pooch out. He reached a shaky hand out to press against it.
Exhaustion crashed into him like a freight train. He just wanted to curl up around the smaller body and sleep.
Izuku panted hard as he pushed himself up. His hands steadied Katsuki. “Not yet alpha...” Purrs bubbled out of his chest like a waterfall. He guided Katsuki's face back to the crook of neck. Drool dripped down his chin as his lips brushed against the gland there. “Nng, here alpha...make me your omega...”
How could he say no to that?
The world faded away once his teeth sunk into Izuku's neck.
.
.
.
Bodies crashed together...lips tangled...
.
.
.
Matcha and caramel...alpha and omega...
.
.
.
Plunging into that tight heat again and again...
.
.
.
Drawing out every sweet mewl and begging cry by sucking slick straight from the source...
.
.
.
A bobbing green head on his cock...
.
.
.
Claiming his omega inside and out...
.
.
.
/**/
Izuku groaned as he stirred awake. He felt so sticky and gross. The blankets below him were soaked in numerous fluids. He couldn't move far though due to the heavy body wrapped around his waist. He smiled fondly and pet blond hair back from the blond's forehead.
What time was it? He phone was dead, but his alarm clock showed 9:38 AM. He wondered if his heat had lasted longer or was shorter due to Kacchan. He turned his head and a twinge of pain went through it.
He lifted his hand up to his throat. There around his scent gland was a healing bite mark...
Kacchan...Kacchan claimed him...
He had to slap a hand over his mouth before the squeal broke out of his throat. That means it worked! He really did trigger Kacchan to present as an alpha— his alpha ! The boy had been so out of it, he claimed Izuku with barely any prompting!
He'd roll around and kick his feet if he could move!
Calm down Izuku, he told himself. The first rut took a lot out Kacchan, but he'd be waking up soon. He needed to get into character. The alpha wouldn't be able to resist his omega asking him to stay and take care of him. After all, he did lose control and claim Izuku. He had to take responsibility for that...
End!