Work Text:
“No.”
“Kacchan please?”
“I’m not repeating myself.”
Izuku gives his best puppy face, a pout tugging at his plump lips and Katsuki is really fighting the heat that tugs at his tummy–his omega falls for the pathetic act, not Katsuki though.
The blonde huffs, keeping his compulsion as he was sat on the floor, glasses so sexily displayed on his face-that leaves Izuku utterly weak-and a computer in front of him. When Izuku lets out a loud whine, Katsuki rolls his eyes–such a big baby.
It doesn’t take long for Izuku to sit behind Katsuki, big and greedy hands shamelessly shoving their way up his shirt and palming his tits and the softness of his tummy. As if it's his way of getting Katsuki to cave in and if Katsuki didn’t have any pride to protect he would have folded and presented to the alpha so quickly.
“But Kacchan I think Hibana is getting lonely!”
Katsuki frowns. He glances at the cute babbling mess on the floor-their adorable chubby baby girl, Hibana, who looks exactly like his stupid alpha father-then back to Izuku.
“You just want to see me big and round again. And our baby girl isn’t even one.”
“Well, I mean Kacchan looked very sexy when he was pregnant, b–but Kachan's always sexy!” Katsuki pitches the bridge of his nose, he can’t help the smile that spreads on his lips but Izuku doesn’t see it nor does he need to, given the way he’s buried balls-deep in Katsuki's hair.
Izuku had always said Katsuki carried a scent of spicy cinnamon and his mom cooking and right now, he’s inhaling it like it’s the only oxygen he has.
“Hibana is only six months, by the time we have another, she’ll be all grown up!” Izuku countered, his bottom lip trembling as if his whole life depends on this argument.
Hibana seems to peek up at the mention of her name, babbling at Izuku who cooed. And Katsuki is so fucking weak, he bites his lip and shifts in his spot where he’s against Izuku.
“Isn’t that right baby girl? You wanna be a big sister?” Izuku puts on his baby voice and it has Katsuki's heart squealing. God, he has to admit, seeing Izuku in his all prime father figure really has him thinking about another bun in the oven.
And Izuku knows exactly what he’s doing because Katsuki is really considering it now, but he doesn’t admit to that.
"You're full of sh–trash, Izu." Katsuki grumbles as Izuku’s hands wander a little lower, trailing hot along his stomach. "We barely survived with one. You just want an excuse to knot me every night."
Izuku swallows hard–his kacchan knows him so well because that's partly the reason. His hand settles into the curve of Kacchan’s waist, biting his lips. Even after three years of their marriage (not to mention the five years dating each other) being able to touch his Kacchan without getting blown in the face feels like a fever dream.
His thumb traces the skin of Kacchan’s stomach, savoring the softness. "Is that a bad thing?" Izuku whispers with smugness right into the shell of Katsuki's ear, scent flaring with satisfaction as Katsuki lets out a betraying gasp.
"Come on, Kacchan! Just think about it. A little sibling for Hibana. Another mini us."
Katsuki's internal omega is basically craving for that image to become reality. He turns his head just enough to glare at the green-haired idiot, shoving lightly at Izuku's chest even as his hips slightly tilt back against Izuku's crotch with anticipation.
"Get off me, you clingy bastard. I have work to finish, go play with Hibana or something.”
Izuku giggles as he leans in to press a heavy kiss to Katsuki's jaw, his fingers giving one last squeeze to Kacchan's tits before pulling back.
Katsuki adjusts his glasses with a scowl, huffing as Izuku bounces over to scoop up a giggling Hibana.
It’s not a no.
**
Okay maybe it was a no.
And Izuku is panicking. His Kacchan has been avoiding him ever since he brought up having another kid. Well not full on avoiding–they still kiss each other, scent each other, but not touch each other.
He has to admit, yeah it's way harder to have sex now that they have a baby who touches nearly everything, who needs to be watched twenty-four seven. But his heart fucking aches when he can’t smell the blond on himself after a shower, for Izuku is greedy and can’t keep his hands to himself for a second while his omega is sitting so prettily from afar.
He needs to worship every part of Katsuki’s body, with his hands, his words, his mouth.
Was the idea really bad?
"Kacchannn." Izuku whines, practically dragging his feet across the living room carpet like a kicked puppy. He is a puppy. A miserable, touch-deprived puppy.
Hibana is fast asleep in her crib, leaving Izuku empty-handed and desperate. He drops onto the couch next to Katsuki, burying his face so hard into the neck of Katsuki's that he almost knocks the blonde over to greedily inhale his scent.
"Are you mad at me? M’sorry Kacchann, I”ll be good to make it up to you, so so good for you!"
Katsuki doesn't pull away–he never pulls away–but his fingers stays placed on his keyboard, itching to pitch Izuku cheeks at his stupidity. "I'm working. And you're heavy, get off."
"You're starving me Kacchan!" Izuku is nuzzling deeper into his soft skin, pressing sticky-sweet kisses along Katsuki's collarbone.
"You kiss my cheek and then walk away! You let me scent you for two seconds before you tell me to go clean the kitchen! It's cruel, Kacchan! This is torture!"
Katsuki lets out a sigh, dropping his forehead forward. "Because if I let you touch me for more than five seconds, you're going to knock me up again, you horny bastard."
Izuku blinks, looking up with hopeful green eyes. "Wait. Is that... is that the only reason?"
"What other reason would there be, dumbass." With a scoff, Katsuki cheeks flush behind his glasses. He finally snaps the laptop close and sets it on the table, turning to glare at Izuku.
"I’d like to have my body to myself for a while! If we have another one right now, I'm gonna lose my mind."
Izuku's chest swells with so much affection he thinks he might burst. The panic melts away almost instantly. He doesn't waste a single second wrapping his arms around Katsuki's waist, pulling the blonde further into his lap.
"So..." Izuku smirks, resting his chin on Katsuki's shoulder while his hands slide under the hem of Katsuki's shirt to squeeze the soft skin of his hips. "It’s not a no?"
"I'm saying not right now." Katsuki grumbles, though his thighs parts so he can straddle Izuku's lap, his hands finding their place in Izuku's messy green curls. He rolls his eyes, but his omega is purring so loud it might as well vibrate right through Izuku's chest.
"Wait until Hibana is at least walking or something. And you're buying me whatever I want after cause I’m putting in all the effort you knots for brains."
Izuku smiles stupidly as he tilts Katsuki's chin up. "I'll buy you the whole world, wifee. My pretty wife.” he presses a kiss to his nose.
Katsuki smacks his chest, blushing furiously. "Don't call me that, and put your hands away, they're cold– ah, fuck, don't–!"
Izuku’s calloused hands slip effortlessly past the waistband of Katsuki’s sweatpants, kneading the soft flesh of his ass with zero shame.
"I'm not cold anymore, am I?" Izuku mumbles into Katsuki's jaw, peppering his scent mark with filthy wet little kisses. "M’Kacchan is so warm. So soft."
"Shut the fuck up." Katsuki gasps, his fingers tangling tightly in Izuku’s messy green hair. "You're a menace. A damn parasite if I must."
"Your parasite." Izuku corrects instantly, beaming up at him with those massive emerald eyes. "Kacchan's favorite parasite."
"Keep talking and you're sleeping on the balcony like a parasite."
"You wouldn't!" Izuku’s hand slides up, thumb brushing over the swell of Katsuki's hip bone. "Kacchan gets cold and lonely without his big alpha pillow." He's true about one thing.
"I have a heater, you self-centered alpha." Katsuki snarls, though his hips are rolling forward into Izuku’s lap with a quiet whimper. The contact makes Izuku shiver instantly.
God, Izuku feels hot. Is it hot in here?–The abrupt change in temperature is sickening. It's like heat is radiating off of Katsuki in waves, warming Izuku’s body. His Kacchan smells so good, and it's making him feel all gooey and needy and–
Before Izuku can flip them onto the couch cushions to completely destroy Katsuki-that being his kacchussy- a high-pitched squeal echoes from the baby monitor sitting on the table which was long forgotten.
Both of them freeze.
“Buh! Daaaa!”
Hibana’s voice screeches through the tiny speaker, paired by the sound of toys being aggressively thrown onto the crib mattress. She definitely adopted Katsuki’s fierceness. Katsuki immediately smacks Izuku’s shoulder and scrambles backward off his lap, his face flushed as he pulls his shirt down.
"Hands off. Hibana wants us."
Izuku buries his face into the cushions, groaning in agony. "I swear she has a sense for when I’m about to get laid by my pretty wife. She inherited a cockblock quirk, I’m telling you Kacchan!" And there is the Izuku, Katsuki all loves and knows, always sputtering nonsense.
"Call me wife one more time and you’re sleeping on the couch." Katsuki huffs though he secretly loves it, leaving his husband to pout and whine while he makes his way to the babyroom.
**
Terrorizing Kacchan is Izuku’s full-time job. Hero work is technically his main income, but being a nuisance to his mate pays priceless, a good deal really, he adores Kacchan’s blushes and explosive huffs.
Katsuki is currently standing in the kitchen, wearing an oversized shirt that clearly belongs to Izuku. He’s carefully chopping green onions for soup with precision.
Izuku enters the kitchen like a stealthy ghost. Well, a ghost that weighs nearly one hundred pounds of pure muscle. Izuku sneaks up behind him, plants his hands directly on Katsuki’s hips, and buries his nose directly into Katsuki's neck.
Katsuki jumps nearly three feet into the air, the knife slicing down onto the cutting board.
"What the fuck Izu?!" Katsuki spins around with the knife still gripped in his hand. "Are you trying to give me a heart attack?!"
"Good morning, my sweet Kacchan!" Izuku chirps, totally unfazed by the weapon pointing at his chest. He leans in and aggressively smothers Katsuki’s cheek with a wet kiss.
"Get off me idiot! I'm holding a knife–"
"Kacchan smells so good in the morning." Izuku interrupts and wraps his arms around Katsuki’s waist, dragging the pouting omega up against his chest and swaying back and forth.
"Did you sleep well? Did you dream of me? I dreamt of me and Kacchan!"
"I dreamed that I threw you into a river." Katsuki hisses, setting the knife safely on the counter so he doesn’t quote on quote ‘accidentally’ kill his husband. "You're suffocating me."
"I had to give you your daily dose of love." Izuku murmurs absently, resting his chin right on top of Katsuki's head. "If I don't, Kacchan will wither away like a leaf.”
"I will not."
"You love me though.”
"I tolerate you for tax purposes." He sniffles a laugh.
Izuku gasps, clutching his chest with one hand. "Tax purposes?! Kacchan, how cruel! After I spent all night thinking about how pretty your eyes are?!"
"You're so fucking cheesy."
**
Being heroes while raising a baby is chaos. Absolute, utter chaos.
Katsuki Bakugo doesn't break under chaos though—he fucking rules it. Or at least, he tries to, until his idiot mate decides to act like a child and test his blood pressure. With embarrassment of course- he never fails to embarrass Katsuki.
They are at the local store, Katsuki is pushing the cart as he’s scanning the shelves for baby formula. Hibana is sitting in the top child seat happily chewing on a rubber All Might teether. Izuku walks right behind them, holding three jars of baby food.
"Kacchan, look!" Izuku whispers, holding up a jar. "It says 'Extra Smooth for Precious Tummies'. Should we get it?"
Katsuki doesn't look up. "All baby food is smooth. Put it back."
"But Kacchan–"
"Put it back."
Izuku pouts.
"Oh, I see how it is," Izuku says loudly. A few shoppers turn their heads. "You used to call my tummy precious, Kacchan. Before you got tired of your devoted husband!"
Another pause. "Izu, shut up."
"I remember," Izuku continues, laying a hand over his heart, "you would nag at me for not eating my veggies for my precious tummy and now I can't even buy veggie puree for our precious baby tummy!"
An elderly woman sniffles a laugh, giving Katsuki a look of young couples these days.
Katsuki grabs Izuku by the collar, dragging him down. "I swear to fucking All might if you don’t stop talking I’ll kill you. Just put the stupid puree in the cart and let’s go." he whispers harshly.
Izuku looked very proud of himself. "You're cute when you're threatening my life." He giggles, pressing a wet kiss right to Katsuki’s lips.
Katsuki’s face burns a pretty pink and fuck he’s weak. He lets go and pushes the cart faster, eyes glued to the floor. "Stupid... loud-mouthed... sexy alpha..."
"Da! Da-da bah!" Hibana babbles.
"See?" Izuku grins, wrapping an arm around Katsuki's shoulders. "Hibana agrees. Mommy is super cute when angry!"
"I’m not cute, I strike fear into villains when I'm mad." Katsuki huffs softly, but he doesn't pull away.
"You strike fear into everyone, Kacchan." Izuku agrees, kissing the top of Katsuki's head.
**
The thing about Kacchan that Izuku loves is that he denies wanting affection right up until he doesn't get it. Katsuki comes home exhausted from the agency, expecting Izuku to tackle him immediately.
Instead, the apartment is quiet- he assumes Hibana was taking a nap but Izuku is oddly quiet when he walks in. He is sitting on the couch in his reading glasses, typing a report on his tablet.
"Hey, Kacchan!" Izuku says, glancing up for a second. "Welcome back home! I made dinner, it’s in the fridge." Then he goes back to typing.
Katsuki stands there, blinking. What the fuck?
Where is the clinging? Where's him being showered in kisses?
He walks over and stands right in front of Izuku. When Izuku keeps typing, Katsuki swings a leg over his lap, dropping onto his thighs. He grabs the tablet, throws it onto the floor and buries his face into Izuku’s chest.
Izuku grins-his plan all along-wrapping his arms around him. "Kacchan? What's this?"
"Shut up." Katsuki mutters into his shirt. "You didn't hug me when I walked in."
"I thought you wanted space~"
"You know that was a lie, you idiot!" Katsuki glares up. "You're supposed to be obsessed with me, me only."
"My needy Kacchan. I'm always obsessed with you."
Katsuki relaxes into Izuku’s collarbone. "You better be. Or I'll blow you up sky high."
"I know, baby." Izuku laughs, kissing his neck.
**
Hibana is fourteen months old and fully moving. She wobbles across the rug, chasing the robot vacuum. "Buh! Stap-ah!"
Izuku watches with teary eyes. "Kacchan... look at her! She's walking. My baby is growing up so fast..."
Katsuki sips his tea, unbothered by his husband being overdramatic again. "She fell on her butt three times today. Settle down."
"She’s a genius!" Izuku scoots over, wrapping his arms around Katsuki’s legs. "And you made a promise if I remember, you said we'd wait until she was walking Kachaaan!"
Katsuki looks at his hopeless alpha, then sets his tea and glasses on the table. He slides down into Izuku’s lap, straddling his waist and pulling Izuku’s head into his neck.
"You're an annoying obsessive bastard." Katsuki murmurs, his scent turning sweet and inviting.
Izuku’s mouth is wide open. "Kacchan...?"
"If we're doing this," Katsuki whispers, "you're taking care of it yourself." It's partly a lie, Katsuki knows Izuku can't handle a newborn alone.
"Really?"
"Did I stutter, dumbass?" and Izuku cheers, scooping his Kacchan up and spinning him around while Katsuki yells at him to stop.
**
Hibana is completely passed out in the baby room after running around the house and her grabby little hands touching nearly everything in reach-she gets that from Izuku.
For the past hour the two adults in their shared bedroom have been going at it. Katsuki came countless times, squirting onto Izuku’s abdomen as he bullies his thick cock into his tight cunt. His thrusts are slow and teasing at first, a little meann if you ask him.
They’re both covered in sweat and fluids, bodies glistening as Izuku presses a sloppy kiss to the side of Katsuki’s neck, his hands making their way back home–Katsuki’s tits. Katsuki breath hitches as Izuku's sharp teeth scraped against his nipple. He whimpered as Izuku tugged on his other nipple, the pain sending shivers down his spine.
Izuku massages each tit in his grasp, rolling and groping the plump fat in his hands. “Hgh– quit fumbling my chest!” Katsuki snaps. Kacchan is so cute while impatient. His breath came in gasps and low moans and he clutched fistfuls of sheets in his hands, squirming.
“Hah, sorry Kacchan, just excited.” Izuku slurs, pulling back with spit completely coating his lips.
“Well stop studying my tits and keep going! I thought you wanted to put a baby in me Izu.” Katsuki says breathlessly and spreads his legs to give Izuku more access to the good stuff- seducing him. And Izuku is fucking weak.
“K-Kacchan? I wasn’t stud- well Kacchan tits are the best in the world. So pretty and pink and Kacchan's reactions when I pitch them are cute!” Izuku blurted. Katusuki rolls his eyes, if he couldn’t have Izuku under him then sure as hell he likes having Izuku on top pathetic and a babbling mess.
“Really, Izu?” Katsuki smiles, wet lips curling to a grin. “I can make more pretty reactions for you since you're such a good boy. Getting your omega pregnant, full of your liter huh?” It rolls off Katsuki tongue, he knows it makes Izuku dizzy, needy, and Katsuki savors it.
Izuku chokes, a whine caught in his throat. “Yesyesyes- gonna make Kacchan carry my pups–Kacchan’s gonna look so pretty and full…” and then he’s trailing off into cloud nine, lapping his greedy mouth at his tits.
Izuku’s hand travels lower, leaving Katsuki’s sore boobs as he rubs Katsuki’s clit, rubbing him with teasing strokes that make his hips buck on Izuku’s cock. His folds were coated in slick and flushed, his breaths coming in ragged gasps.
“Kacchaan,” he cooed, as he nuzzled his nose between Katsuki breasts, deeply inhaling his scent. “You smell so good, like cinnamon and caramel and a super sweet-spicy treat.” His teeth gently grazed his skin as if wanting a bite.
“I just wanna eat you up!”
“Y-you're doing that right now bastard.” Katsuki said as he looked away, pursing his lips in embarrassment. Izuku fingers explored the lips of Katsuki pussy, spreading his spit and his Kacchan juices all over them, his fingers gliding along his lips effortlessly.
Then Izuku picks up his pace again and Katsuki fucking keens. Izuku's hips almost stuttered from the response. God, he couldn't even describe how good it felt to be inside of his Kacchan.
Izuku murmurs into Kacchan’s nape. “So pretty Ka-Kaccha-ah, gonna get you pregnant–I’ll be such a good dad, Kacchan, ‘m a good boy for you, your good boy, ah–fuck,” He rams into the omega harder and faster, his babbling becoming a mess.
His voice becomes shaky and Katsuki can tell he’s close to cumming. Katsuki hips rock back onto him, matching his pace and moans slipped out his mouth. “Yeah? You're gonna be a good boy for me? Gonna breed me with y–your children hah?”
Izuku whimpers, nodding. “Gonna be s’good” He thrusted up, his cock hitting just the right angle.
"S─shit right t─there Izu!" Katsuki whine while Izuku pistons into him with his balls slapping against his clit driving him fucking crazy, every thrust has his tits and stomach jiggling. Katsuki cries and holds him closer and Izuku leans forward to swallow his needy moans with a kiss.
Katsuki can barely keep up the kiss, swearing escaping his mouth as he feels his stupid big dick kissing his womb. Izuku thrusted once, twice before he came, spilling himself inside of Katsuki. He pushed his hips deeper and grunted, filling him up with his cum. Katsuki squealed as he came on Izuku cock, his breath shaky.
“Shit.” Izuku breathed as he rocked his hips against Katsuki’s letting the last bit of his orgasms rock his core. “You’re so hot Kacchan. You look so sexy with your stomach full.” He purrs in his ears and Katsuki couldn't stop the smile tugging his lips.
Izuku pulled himself out, a dopey grin appearing on his face when he heard the soft wet sound of his cock sliding out of him. He has a stupid look on his face-meaning trouble and Katsuki is correct when he swipes over his wet clit a few more times.
Katsuki gasped, still sensitive and it brought him another climax, a small cry escaping him. He practically dissolves into a puddle, huffing out a laugh.
“Y–You’re such a fucking tease.”
Izuku's hand came up to his cheek and he stroked it with his thumb. His hair was a complete and utter mess where Katsuki had been fisting it. “Kacchan loves it though.” Then he runs his thumb over his nipple- gosh he really can’t leave his tits alone.
“Mmhp, I do.” Katsuki leans in and presses a tender kiss to his neck that had Izuku giggling.
**
It’s no surprise nine months later when Katsuki is in labor shouting curses at his dear poor husband while in the hospital bed.
“I hate you, I hate you so–fucking much ohh, holy shit I’m gonna fucking kill you–!” Katsuki growls through gritted teeth, screaming after as he grips Izuku's wrist.
“I love you too Kacchan. Ah! You’re doing so good!” Izuku cheers, totally unfazed as his arm literally turns purple. Katsuki muffles another scream, throwing his head back into the pillow.
"Next time," Katsuki wheezes. "I'm tying your dick in a knot and crushing your balls!" The doctor looks up, scared himself even though the threat wasn't meant for him.
"Whatever you say, honey!" Izuku smiles idiotically. What a pair.
Hours later, Katsuki is almost passed out exhausted in the bed and Izuku is buzzing with joy as he’s cooing at the two babies sleeping soundly in the cribs. It’s also no surprise that they are twins–one boy and another girl–and to add salt to the wound, fucking carbon copies of Izuku.
Same wild green curls. Same freckles scattered across their chubby cheeks. Even their sleeping faces carry that exact same goofy open-mouthed smile.
“I fucking…” Katsuki pants. “Carried those two little shits for nine months just for them to look like their father?!” He whispers shouts and Izuku gasps, offended.
“Hey! At least you have 3 chubby babies who reminds you of your sexy husband.” Izuku pouts and Katsuki flips him off but his hand drops back onto the mattress soonly after from pure exhaustion.
"Sexy my ass." Katsuki rasps, as he watches one of the twins kick a tiny foot. "I got ripped off. I demand a refund."
Izuku scoots his chair closer, grabbing Katsuki's limp hand and pressing wet kisses. "You did amazing, Kacchan. I'm so so proud of you."
"Shut up." Katsuki mutters and Izuku is leaning down to press soft kisses to his forehead.