@deerop0: Bkdk a/b/o - a!bkg/o!dk - fuck...

Bkdk a/b/o - a!bkg/o!dk - fucky bkg/cheating (not bkdk)‼️ ambiguous ending bc this is just porn tbh

The first time Katsuki lays eyes on their newest babysitting candidate, he does a double take but says nothing, letting his wife do all the talking.

It’s for the best, really, because he’s not sure what he’d say if he opened his mouth.

Instead, he stares at the green-haired omega as he chats on and on about how much he loves kids, and how he aspires to be a pre-school teacher.

The cute little thing is quirkless, and Katsuki knows his younger self would’ve had a field day negging the shit out of him, but he’s grown now, and he just wants to know what he would sound like moaning underneath him.

“Perfect!” Camie says, snapping Katsuki out of his daydream. “Can you start tomorrow? We both have an overnight shift, so we’d really appreciate it! Your background check and credentials came back clean!”

Izuku’s eyes light up. “Of course! What time do you need me to be here?”

Katsuki’s mind blanks again as he stares at those plush lips, and he knows he’s gone.

——

It’s been a month since Izuku began working for the Bakugous, and he’s still in awe that he’s babysitting for the top hero duo.

Aika, their eight month old daughter, babbles on his hip as they watch Ryu, the Bakugou’s five year old son, build something out of legos on the floor.

“Great job!” Izuku praises sunnily once he’s presented with the finished product. “You’re so talented!”

Aika shrieks in agreement, her little hands clapping against her chubby thighs.

Ryu’s chest puffs up proudly, and Izuku laughs at the way the little alpha struts to grab his juice box, everything about him looking just like his father apart from his brown eyes.

The sound of a key jingling has the three of them looking to the front door, and Izuku smiles when Katsuki comes in, looking exhausted from his 14-hour shift.

It’s nearly 9PM, and the kids are already changed into their pajamas, ready for bedtime.

Camie is on hero duty until the morning, but now that Katsuki’s home, Izuku knows that his time with his new favorite kids is about to end for the day.

“Welcome home, Kacchan!” Izuku says, enjoying the way the older man’s face softens slightly.

“Deku,” Katsuki acknowledges, tossing his keys on the counter before scooping up his kids with a wide grin, his body close as Izuku transfers Aika to his arms. “How are my little shits?”

“We’re good, daddy!” Ryu says. “‘Zuku took us to get ice cream and told us not to tell you!”

Katsuki smirks, eyeing Izuku, who’s red as a tomato.

“What part of a secret don’t you understand, Ryu?!” Izuku whines, giggling a bit. “I-I hope you don’t mind, Bakugou-san…”

The shift in title has Katsuki’s eyes rolling. “‘Course I don’t, nerd. I’m not the helicopter parent.”

/Camie is/ is implied, and Izuku looks down awkwardly, not wanting to agree and offend Katsuki.

“I was just about to put them to bed,” Izuku says, twiddling his thumbs. “D-do you want me to, or would you rather do it yourself?”

“Go ahead,” Katsuki says with a shrug. “I still gotta shower and change. They’d probably prefer you do it, anyways.”

“We love ‘Zuku!” Ryu confirms. “He’s the bestest!”

“The /best/, silly,” Izuku corrects gently, tickling under his chin.

After he’s done helping Ryu brush his teeth and putting both kids to bed, Izuku walks into the living room to see Katsuki laying on the couch shirtless, his hair damp as he scrolls through his phone.

Izuku bites his lip. “Have a good night, Kacchan…”

Katsuki looks up from his phone, his expression unreadable as he watches Izuku walk to the front door.

“Actually,” the alpha says, his tone casual. “I need your help with something.”

Izuku pauses, his door on the handle, and turns back to the hero with a head tilt.

“O-of course!” Izuku says, bouncing to the couch like an over-eager bunny.

He tries to keep his gaze respectful as he looks down at Katsuki’s bare torso. The man is married, no matter how attracted Izuku is to him.

Cw: intersex omegas

He at least has the capacity to feel guilty about it, unable to properly maintain eye contact with Camie knowing what he fantasizes about at night - her husband, above him, fucking into his pussy -

“I’ve just been really tense lately, you know?” Katsuki says, breaking his train of thought. “I remember you said some shit about taking massage classes.”

“Yeah!” Izuku says, perking up. “What’s been bothering you the most?”

“My left calf,” Katsuki says. “Been cramping up like a motherfucker, and I’d rather avoid the doc unless necessary.”

“Does the big, bad Dynamight have a fear of doctors?” Izuku giggles, grabbing a pillow and setting it on the floor, plopping down on it next to Katsuki’s leg.

“No, you fuckin’ shit,” Katsuki grumbles. “Just a waste of my precious time.”

“Pft, okay,” Izuku teases, reaching out to roll up Katsuki’s gray sweats. As soon as he presses a hand to the calf, he feels how tense it is. “You’re really knotted here…”

He pointedly does /not/ blush at the very mention of knots.

“Yeah,” Katsuki says glumly. “Can you work some of your magic?”

“I can try,” Izuku says, sticking his tongue out in concentration. “B-but I have to ask… why haven’t you asked Camie to check it out?”

Katsuki looks down at him as he starts to knead his fingers into the firm muscle, and the alpha groans in contentment.

It goes straight to Izuku’s pussy.

“Sometimes things happen between couples after they have kids,” Katsuki says, explaining slowly like he’s talking to a dog, not a 19-year-old college student. “Camie and I… let’s just say, we don’t really do intimacy anymore.”

Izuku gulps and looks up, noticing the way Katsuki is looking at him like a predator eyes its prey, and he suddenly feels entirely vulnerable and aroused, his mind and heart at war.

“I can’t say I don’t miss a tight, wet hole to take my stress out on,” Katsuki continues.

Izuku chews on his lip, his gut toiling with an anxiety that screams at him to /not do/ what he’s about to do.

“K-kacchan,” he whispers. “D-do you want me to…?”

TBC

“Do I want you to what?” Katsuki asks, his voice entirely too mocking for Izuku’s horny brain - it sends a jolt of heat straight to his core, because Katsuki knows /exactly/ what he’s doing, and he’s not he even a bit subtle about it.

“You know,” Izuku whines, intently staring at where his hands massage into the hero’s strong muscles.

“I don’t, actually,” Katsuki says casually. “Do I want you to put the kids to bed? You already did. Do I want you to leave? Not really.”

“Kacchan,” Izuku begs, not quite sure /what/ he’s begging for. Amnesty? For Katsuki to stop dancing around what they both know, just to tease him?

“Deku,” Katsuki parrots, his tone bored. “Do I want you to what?”

Izuku gulps, his eyes burning with embarrassed tears. Katsuki is so unfair, leaving him vulnerable like this.

“I can… help you,” Izuku whispers, biting his lip cutely. “I-if you want…”

He’s not sure if he’s imagining it, but he’s pretty sure Katsuki shivers at those words.

“You wanna be a good boy for me?” Katsuki whispers, his eyes hooded as they look down to where Izuku is sitting between his legs. “Or are you just a desperate little slut, hm? Asking me to cheat on my wife?”

Izuku’s mouth opens in a panic, his face flushed. “N-no, I’d never -!”

“Isn’t that what you just implied?” Katsuki asks as if it’s the most obvious thing in the world. “Should’ve known you’d be a whore. I can tell by the way you look at me, you know.”

Izuku looks down, his lips quivering in shame, but Katsuki continues.

“You just wanna be used by the top hero, don’t you?” The alpha asks, deceivingly gentle. “Like a fucktoy.”

“No,” Izuku says quietly, a complete lie. “I just… wanna help…”

“Mm,” Katsuki hums, shifting a bit. “Just wanna be useful, huh?”

Izuku worries at his bottom lip, still looking down, unsure what to do - it’s clear that Katsuki wants something from him, but why does he have to be so sadistic about it?

Suddenly, there are strong arms hoisting Izuku up from his place on the floor, and he instinctively wraps his legs around Katsuki’s trim waist, holding onto those broad shoulders for purchase.

Their faces are close, too close, and Izuku can smell the mint on the alpha’s breath.

And just like that, the older man is leaning in and capturing his lips in a dominating kiss, and Izuku thinks he can /feel/ the pent up sexual frustration behind it - the way he pushes in deeper, harder. The way his tongue licks at Izuku like he’s a sweet treat.

The walk to the bedroom feels like hours, the omega drunk on Katsuki’s lips, but then he’s placed on a soft mattress, the kiss seamlessly flowing through the transition.

“I want you to lay back and play with your pussy,” Katsuki growls against his lips, his kisses bruising. “Want you to open that little fuckhole up for my cock.”

Izuku lets Katsuki strip him of his shirt and soft leggings, and he lays back against the pillows.

He feels completely exposed in just his frilly panties, his hands moving unconsciously to cover himself.

“Don’t fuckin’ cover yourself,” Katsuki demands. “Pull those panties aside and show me that pussy like a good bitch.”

Izuku thinks he might die from the mixture of arousal and shame flowing through his body, but he hooks his finger on the crotch of the panties and pulls them aside with shaking fingers, squeezing his eyes shut in embarrassment.

More shame toils through him when a cloud of Camie’s signature honeydew scent wafts from the pillow - this one must be hers, and that thought sends electric guilt and a misplaced sense of smugness through his body.

“Fuuuuck,” Katsuki groans, and Izuku cracks one of his eyes open just enough to peak at the man and watch how he slowly rubs his hardening cock through his sweats. “Perfect little pussy.”

Izuku uses one hand to hold the panties aside and the other to rub at his clit in slow circles, feeling himself slick up even more at the feeling and the audience.

Katsuki looks unfairly handsome, his abs tense and his big hand rubbing himself.

“Finger yourself, sweetheart,” Katsuki says gently, and Izuku scrambles to obey. “That tight little cunt won’t be able to take me if we don’t stretch it out.”

Izuku presses one of his fingers in slowly, widening his legs to give Katsuki a good look.

“Keep rubbing your clit,” Katsuki instructs, and Izuku continues to massage over it as he uses his other hand to hold the panties aside and finger himself.

After a moment, he begins to slowly thrust the finger in and out feeling the way his slick drools out with it.

“Look how wet you are,” Katsuki coos, finally pulling his pants and boxers down enough to let his dick break free.

It’s big, that’s Izuku’s first thought, and his mouth goes dry when the alpha begins to stroke it in time with his thrusting finger.

“That won’t fit,” Izuku whines, slipping in another finger and moving them in and out faster unconsciously at the sight, his hole squeezing with want.

“It will,” Katsuki says, his eyes trained on the way Izuku’s copious slick leaves a stain on the bed.

“I can’t - need you - K-Katsuki -,” Izuku garbles, squeezing around his fingers as he orgasms for the first time tonight, his clit throbbing with sensitivity.

“Good boy,” Katsuki praises, pulling his tank top over his head and slipping off his sweats.

He slides into bed with Izuku, immediately reclaiming his lips and nudging the omega’s fingers out of his soaked hole, pressing two of his much thicker digits in.

“O-oh, alpha,” Izuku moans, throwing his head back against the pillow as those big fingers massage him deep.

“That’s right,” Katsuki says. “Open up for me.”

Izuku’s hips working in tandem with Katsuki’s strong fingers, his body begging for more as he moves against them desperately.

Katsuki’s huge cock is hanging free, his heavy balls looking way too good to Izuku’s eyes.

The omega reaches out his slick-soaked hand that he’d used to fuck himself and wraps his fingers around the length, stroking up and down as Katsuki finger fucks him.

“Fuck me?” Izuku says, plastering on the look he knows will drive Katsuki wild. “Please, alpha?”

TBC

Katsuki’s eyes dilate in arousal, and Izuku knows his prey has been caught - which, is he the prey, or is Katsuki?

Playing up the whole innocence schtick had been easy enough - he has it all going for him, after all. Doe eyes, innocent freckles.

He hadn’t wanted to straight up flirt with the alpha - who knew if he was the loyal type? - but then he’d seen the way Katsuki looked at him, his eyes lingering on his ass when he thought Izuku wasn’t paying attention.

It was easier after that, batting his lashes at the alpha, ‘accidentally’ dropping something and bending over slowly in his skin tight leggings.

It was also easy to see the rift between Katsuki and Camie, the room always tense when the two of them were together.

Izuku can’t help but feel guilty about it, because it’s clear that Camie’s trying to make it work - and why wouldn’t she be? Dynamight is one of the most desired alphas - top ranked hero, sexy as hell, personality alluring in its own way. Everyone wants a piece of that.

But right now, Izuku can’t find it in himself to care as he bites his lip and looks up at Katsuki, begging the alpha to fill him up.

He wonders if Katsuki’s done this before, during one of those “late night emergency calls” Camie had mentioned he often gets.

A burning jealously in his gut has him quickly pushing /that/ thought aside.

“You’re a dirty fuckin’ slut, you know that?” Katsuki says cruelly, watching him stroke him with his own slick. “What would your little agency say about you begging for your client’s dick, hm?”

Izuku doesn’t answer, his cheeks burning.

“Should I let them know they have a little homewrecker working for them?” Katsuki continues, goading.

“I think this home’s already wrecked,” Izuku snaps back, picking up the rhythm of his stroking.

“Oh-hoh!” Katsuki laughs. “Feisty lil’ thing. What gave it away?”

“You gonna interrogate me all night, or are you gonna fuck me?” Izuku asks, locking gazes with Katsuki as he squeezes his hand his around that thick cock just enough to make the alpha’s eyes narrow.

“I’m gonna dick you down, you eager little bitch,” Katsuki snarls, always having something to say. “Don’t worry.”

“Then do it!” Izuku growls, clenching around the fingers that are now fucking in and out of his pussy at a breakneck speed. “Or I’ll find an alpha who /will/.”

“You wouldn’t,” Katsuki says, cocksure. “Little hero worshipping whore, you’re gagging for my cock, aren’t you? Only mine will do.”

Izuku hates that he’s right. Hates how he’s nursed a crush on the hero for years.

“Fuck me,” Izuku repeats simply, spreading his legs wider for those thick fingers, and Katsuki easily slips between them, his dick slipping from Izuku’s hand. “Fill me up, alpha.”

“You asked for it,” Katsuki says simply, pressing the tip to Izuku’s soaked folds.

The first push is a stretch, despite how slicked up and loose Izuku feels - the alpha’s dick is goddamn huge, and his pussy struggles to accommodate it, his insides fluttering as even more slick rushes out to ease the way.

“Fuuuck,” Katsuki groans, pressing in deeper.

Izuku just whimpers in agreement, unable to form words, his mouth falling open in a perfect O shape.

“So fuckin’ tight,” the alpha grunts, slowly sliding all the way in until his full balls are pressed against Izuku’s asscheeks.

Izuku lets out a pathetic, breathy moan as the older man bottoms out, his pussy spasming around the intrusion. It’s too much, too good, too full, and he never wants this to end.

“T-too big,” he finally gets out, but his hips begin to move on their own, shallowly helping that cock thrust in and out, taking the heat form his words.

He can feel his slick drooling onto the sheets below, the small puddle reaching his ass and thighs.

“You’re taking me so good, baby,” Katsuki coos, grinding his strong hips in circles, his cock throbbing with every movement, and Izuku can /feel it/, his insides squeezing softly with every pulse of that big dick.

“Look at that cunt take me,” Katsuki murmurs, leaning down to press a deceivingly gentle kiss to Izuku’s lips before urging the omega to look down and watch his pussy stretch wide around that dick. “This pussy’s been waiting for a real cock, hasn’t it?”

CW: daddy kink shiz

“F-fuck - yes, daddy!” Izuku moans, and his eyes widen in alarm as soon as the word is out.

Katsuki’s hips still, and before Izuku can panic, the alpha is fucking into him even harder, one of his hands sliding into Izuku’s hair and yanking, hard.

The hand moves down after a moment, his quirk-rough thumb sliding into Izuku’s mouth, thrusting in and out sloppily.

“Fuckin’ whore,” Katsuki groans, pulling out quickly and flipping Izuku onto his knees before re-entering smoothly.

Izuku grapples at the pillows as Katsuki roughly takes him from behind, his ass jiggling with every thrust.

“Fat fuckin’ ass,” Katsuki murmurs, almost to himself, before his spit-wet thumb presses to the little pink hole.

“W-what are you -,” Izuku whimpers, his eyes widening when that thumb sinks into his ass. “O-oh!”

The omega nearly screams, slapping a hand over his mouth when he remembers that the kids are trying to sleep.

Katsuki just smirks down at him, working his hips at a solid, commanding speed, the sounds of Izuku’s wet pussy echoing around the room.

“Call me that again,” the alpha demands, balls slapping into Izuku’s clit with every strong thrust. “Call me that again, baby.”

“D-daddy!” Izuku whines, turning his face shamefully into Camie’s pillow. “So good, daddy!”

“Good boy,” Katsuki says, and Izuku nearly whites out as he squirts around the alpha’s cock.

TBC

Izuku never thought being fucked through an orgasm would be so amazing yet so /much/, and he whines with overstimulation as Katsuki’s cock continues to make its home in his pussy with strong, powerful thrusts.

“Fuckin’ knew you were a squirter,” the alpha huffs.

Izuku is blissed out below him, collapsing onto the sheets with crossed eyes and drool leaking from the corner of his mouth.

Every movement from behind him drives him further into the mattress as Katsuki chases his own orgasm.

There’s something about the way Katsuki’s using him, fucking into him with abandon now that he’s ensured his omega has cum that sends Izuku crashing towards another orgasm himself.

When he’d taken this job, this is the last place he would’ve imagined himself.

Sure, he’s always thought Dynamight was attractive, and a little bit of wishful thinking on his part had had him daydreaming about this very scenario, but - this is on a whole ‘nother level.

Katsuki is a rough, attentive, demanding lover, and Izuku can’t get enough of him.

He can see why Camie is trying so hard to make their relationship work, and yet another wave of acidic guilt rolls through his belly.

Bakugou Katsuki is addictive, dangerous, and entirely out of reach.

Izuku can barely hear his own moans and whimpers over the roaring pleasure in his ears, but he knows he’s louder than he should be, spurred on by deceivingly sweet whispers of “good boy” from Katsuki.

He ends up orgasming again when the swell of the alpha’s knot begins to beat against his abused opening, his mouth falling open in a silent scream as his insides flutter around that cock softly, encouraging it to lock. It pulses in response, the knot growing rapidly.

“Gonna knock you up,” Katsuki growls, and Izuku’s instincts are preening even as his foggy brain knows this shouldn’t be happening.

“Please, alpha!” Izuku whines pathetically, pushing back against the knot. “W-want your pup!”

With a groan, Katsuki gives one final, powerful thrust, and the knot inflates inside of Izuku’s pussy, more slick rolling down the insides of his thighs as his body accommodates it.

Izuku buries his face in the pillows and whimpers softly as Katsuki continues to shallowly fuck into him, leaning down to press gentle kisses to his shoulders as he pumps streams of hot, virile cum into his womb.

“You’re mine,” Katsuki murmurs as he rearranges them onto their sides and wraps himself around Izuku’s smaller body possessively. “Got that?”

“Y-yes, daddy,” Izuku replies, his face hot as his eyes flicker with exhaustion.

The next morning, it’s Camie’s voice that wakes Izuku, the woman cheerfully dancing through the kitchen as her kids giggle from the dining room table.

When he exits the room, he notices Katsuki grabbing his keys from the door side, heading out the door for his own hero shift.

“There you are, silly!” Camie calls towards the sleepy omega. “Katsuki told me you were too tired to go home last night and crashed in our bed!”

Izuku’s eyes flicker over to the couch, where Katsuki’s pillow and a throw blanket lay amok.

“He’s such a gentleman,” Camie sighs, seeing his look. “He slept on the couch!”

“Y-yeah, he is,” Izuku says awkwardly, feeling a stream of Katsuki’s semen ooze into his panties now that he’s standing.

“Why don’t you join us for breakfast?” Camie asks, the kids immediately agreeing.

“Yeah, ‘Zuku!” Ryu immediately shouts as Camie places a plate of pancakes and sausage in front of him, and Aika babbles loudly.

Izuku shuffles his feet and scratches the back of his neck. “I-I actually promised my mom I’d join her for breakfast today…” he lies, sending the other omega an apologetic glance.

“No worries, dear!” Camie says, shooing him out the door with a smile. “You can join us anytime!”

“T-thanks!” Izuku chirps, and he rushes to his car as soon as the door closes behind him.

The Bakugou’s house is huge, almost a mansion, with a modern look that ties it all together, and Izuku doesn’t think he’ll ever be able to see it again without feeling guilty.

A day later, Camie sends him his shifts for the week, and Izuku’s stomach rolls with anticipation and shame.

-

“Pregnant!” The white little stick reads, and Izuku shakes it experimentally, willing it to change its mind.

Katsuki has proven himself to be an opportunistic lover, fucking Izuku whenever the chance arose, which was surprisingly often. Camie preferred the night shift, so the majority of babysitting evenings ended with the younger omega being fucked by the number one hero.

“I’m pregnant, Kacchan,” Izuku whispers one night, deciding to just rip off the bandaid.

Katsuki’s face is buried in his hair as they spoon, and he lets out a puff of air, the breath tickling Izuku’s ear.

“About time,” the alpha says simply.

“You’re - not mad?” Izuku asks, surprised.

“I’ve been fucking you raw multiple times a week, dumbass,” Katsuki snorts. “What’d’ya think I wanted?”

Izuku turns to look at the alpha, who simply pulls him in for a deep kiss.

“What are we… gonna be?” Izuku asks tentatively when they pull apart, dread filling his tummy. “After this?”

Katsuki stills.

“You’re my omega,” the alpha says, as if it’s the most obvious thing in the world.

“What about Camie?” Izuku asks quietly.

“We’re long overdue for a divorce,” Katsuki replies nonchalantly, and Izuku lets out a soft sigh of relief as he snuggles back against Katsuki’s firm body.

“Okay, alpha,” he says, and he doesn’t see Katsuki’s smug smirk into his hair as he turns back around, closing his eyes for the night.

END