Work Text:
The first leaves have finally started to fall, and thus begins Eri’s favorite season. She loves to belly flop into raked up leaf piles and bury herself until nothing but the pom pom at the top of her little green hat is showing. She loves to collect leaves in their reds, yellows, and oranges, and have her Papa press them in between the pages of his heaviest books to keep, only for them both to forget about them until they come fluttering out the next time he tries to reference Quirk genetics or municipal hero policy in one of his reports. She loves sipping hot cocoa in front of a bonfire on the nights when it’s finally cold enough to merit one, snuggled up close to her fathers, all under one blanket, as they tell her stories about their hero work (only the most innocent ones, although she doesn’t know that part).
Eri especially loves trips to the park, where she can crunch along the nature trails to gather her collections, pet frollicking dogs (only with their owner’s consent, at her dads’ insistence), and roll over fallen logs to inspect the creepy crawly residents underneath. Today is one of those trips. The sky is a piercingly beautiful blue, clear except for a few scudding white clouds. Eri and her Daddy are returning from a foray into the woods to where her Papa is waiting with a picnic lunch by the playground. Katsuki’s hands are full with at least seven leaves, resplendent in their jewel colors, a stick that looks like a sword, and three “gems,” which appear to be a local variant of quartz, dull off-white crystal poking out from reddish stone. Katsuki contemplates “losing” the ugly things on the way back to the car, but then he considers how heartbroken Eri would be and thinks better of it. As long as she doesn’t leave them out to trip over, he really can’t complain too much.
As the pair reach the top of the hill, Katsuki scans the playground for Izuku’s mop of green curls. He spies him underneath a spindly young maple tree, the picnic blanket spread out behind him. There is also, bewilderingly, a woman standing beside him. She’s short, her generous curves shown off well by the tight, purple workout gear she’s wearing. Her straight black hair is done up in a braid that snakes over one shoulder. The woman is juggling a toddler on one hip, and resting her other hand on Izuku’s bicep. Katsuki narrows his eyes.
“Daddy, who’s that lady talking to Papa?”
“No idea. Probably someone who thinks Papa’s handsome and wants to take him out on a date.”
“Ew, that’s gross… Who wants to go out on dates?”
“Papa and I do, you know.”
“What? Papa wants to go on a date with that lady?!”
Katsuki bites back a bit of a growl, “ No . With each other. We don’t go on dates with anyone else.”
“Okay,” Eri answers with an uninterested shrug, “Well, I’m not hungry yet, so can I go play on the playground?”
“Yeah, sure,” Katsuki says, eyes still focused intently on Izuku’s conversation.
“Give me my stick sword?”
“Not a chance.”
“Aw… Fine. Bye, Daddy.”
“Yeah, yeah, bye, Eri-bee. I’ll grab you for lunch in a little while.”
Katsuki waits until he sees Eri has made it all the way to the little playground and has claimed a swing for herself before he makes his own way down the hill and towards Izuku. Before he goes, he adjusts his clothes. He tucks Eri’s “gems'' into one pocket, and shifts the rest of her treasures into one hand.Then, he pulls his jeans up his hips until he can feel the tight press of denim against his backside. The sleeves on his soft, baby pink cable knit sweater are rolled up, revealing Katsuki’s muscular forearms. He runs one hand through his hair, tousling it into an artful wave.
Perfect. Game on.
Katsuki begins a slow, predatory saunter down the hill. He’s at Izuku’s back, but the black-haired yoga mom gets the full display of his model walk towards the two of them. By the time Katsuki has almost reached the pair, Yoga Mom’s eyes are glued to him, and Izuku turns to see what she’s looking at.
Katsuki meets his gaze with his most sinful of smiles, a slow, crooked smirk that shows off the perfect whiteness of his teeth. Izuku lights up when he sees his husband, a broad grin gracing his own face. Katsuki reaches out to slide one hand around his waist, giving his hip an almost too low for public squeeze and leaning up for a kiss.
Izuku bends down to give him one and Katsuki slides their lips together, claiming his husband’s mouth with his own in a greedy insistence. The kiss lasts just this side of too long, and even when Katsuki pulls away, he ignores Yoga Mom, instead flashing Izuku another smile and a simple “Hey.”
“H-Hey yourself, Kacchan. Where’s Eri?”
“She wanted to play on the swingset a little bit before lunch, so I sent her off. Can you blame me for wanting a bit of alone time with you?” Katsuki lets his eyes slide to the black-haired woman as if to say “if only this bitch hadn’t gotten in the way.”
The smile he gives her is cold and brittle, dismissive even as he sticks out a hand for her to shake as he introduces himself. “My name is Bakugou Katsuki. I’m Midoriya’s husband . And you are…?”
Izuku interjects hurriedly, recognizing the sudden tension in the air, if not its source, “This is Yamaguchi Kyoko. The top of her stroller was stuck, so I offered to fix it for her. She and her son, Tobio, just moved here, and I was telling them about the area! Yamaguchi-san says she’s looking for somewhere to do yoga.”
“Right… I’m sure she is.” Katsuki narrows his eyes slightly at the woman.
“It’s a pleasure to meet you, Bakugou-san.” Yamaguchi’s ears are flushed pink, although it’s hard to tell if it’s from embarrassment or the chill in the air. Katsuki hopes, savagely, that it is shame coursing through her. How dare she find his husband attractive! Only he’s allowed to notice Izuku’s objective perfection! Or… no, that’s not right.
Katsuki feels a blush crawling across his own cheeks. He’s definitely being an asshole about this, isn’t he? He’d thought he’d left this sort of jealousy behind in high school, but here it is popping up again. It’s not Yamaguchi’s fault that she finds Izuku attractive. Anyone with eyeballs would! It would be almost more offensive for her to ignore the panty-dropping glory that is Midoriya Izuku. He’s too hot for any man-loving person to pass up on!
It’s also not like there was any way for her to know Midoriya was taken before now. He hasn’t worn his wedding ring out on day trips since he almost lost it while building sand castles with Eri at the beach their first summer together.
Katsuki lets his face soften into his Friend of the People hero smile. He’s worked on it for years, since he’d almost failed an end-of-year exam when the victim he was supposed to be saving was too scared to follow him out of the fake disaster zone. It’s a smile that says “I promise I’m not as scary as I look; you can trust me.”
“It’s a pleasure to meet you, as well. You’re lucky you ran into Izuku, here. I know how difficult those strollers can be to deal with. If I were you, I would’ve needed some help, too.”
Yamaguchi noticeably relaxes. “I swear the companies who make those things engineer them on purpose to break on you so you have to keep going back for replacement parts!” She smiles and bounces Tobio a little further up on her hip before leaning down to kiss the dandelion puff that is his hair. Katsuki’s heart clenches a bit with guilt. She really seems to be a sweet lady.
“You know, if you ever need help with the stroller again, our friend Kirishima is a whiz with fixing things. I think he’s even at the park today. I ran into him with his dog earlier on the trail, and I know he usually loops that thing a couple times before going home.” Not to mention that the red-haired hero is currently single, looking for a partner, and a completely romantic sap. He’s the best peace offering Katsuki could give.
“Oh, I wouldn’t want to bother him…”
Katsuki snorts, “Oh, believe me, you wouldn’t be. The guy loves kids. And, uh… yoga.”
Yamaguchi blushes again, and moves to pull back the cover on her stroller, tucking her son inside. “Well, then maybe I should see if he’s still around…” She says the words into the depths of the stroller, as if too shy to fully admit them to a pair of strangers.
Izuku looks between Yamaguchi and Katsuki in confusion, his mouth hanging slightly open as if a question is holding on to his tongue, not willing to let go and tumble out between his lips, “Um… Well, it was great meeting you, Yamaguchi-san. I hope we see each other again soon?”
The woman gives Izuku a genuine smile, “Absolutely! And thank you again for all your help with the stroller!” She waves goodbye, gets her son to do the same, and then hurries up the hill towards the walking trail.
When she makes her way out of earshot, Izuku whirls on Katsuki, “What on earth was that about?”
“Whaddaya mean?”
“What do you mean, what do I mean? That was weird , Kacchan! You were being weird!”
“Well, what was I supposed to do? She was flirting with you, dumb ass!”
“Whaaaaat?” Izuku grins at Katsuki, incredulous, “You’re joking. That’s crazy…”
Katsuki mimics Yamaguchi, raising his voice up into a simpering alto and reaching out to caress Izuku’s arm, “‘Oh, excuse me, sir, but my stroller’s broken and I need some help. There must be some way I could repay you. Maybe… a kiss?’” Katsuki bats his eyelashes and sticks his lips out in a simpering pout.
“No way, Kacchan! Cut it out!” Izuku grabs his husband around the middle and tugs him down onto the picnic blanket so they’re sitting side by side, thighs snug against each other.
“You’re telling me that you go around stroking people’s biceps and telling them how flexible you are from doing yoga all the time?”
“She was only touching my arm because she thought I looked really strong and was wondering where I worked out so she could-- Oh, you know, now that I’m saying it, she was definitely flirting, wasn’t she?”
“Yup.” Katsuki pops the consonant obnoxiously, staring at Izuku until the big man flicks him in the nose.
“Well, the flirting thing explains why you were so… grabby with me, but why try to set her up with Kirishima?”
Katsuki ducks his head and avoids meeting Izuku’s eyes, “I just… I felt a bit bad for snapping at her like that. She didn’t know you were taken, and she seemed like a nice lady. So I wanted to set her up with someone I knew would treat her right.”
“Awwww, Kacchan! You’re such a big softie!” Izuku tackles Katsuki and snuggles him close, ignoring Katsuki’s flailing limbs and shouted protests. Eventually, his caterwauling draws Eri over from the playground and she gleefully joins the melee. The little girl helps Izuku with his violent hug attack, trapping Katsuki’s arms against his sides and jamming her cold nose into the back of his neck until he howls in melodramatic rage.
Eventually, both father and daughter tire of the game and let Katsuki go to lick his wounds in peace. Izuku doles out portions of cold yakisoba and bottles of Ramune (a special treat that Eri delights over), and Katsuki’s little stunt seems all but forgotten in favor of enjoying the autumn sunshine.
***
Eri is exhausted when they get home, mindlessly making her way through dinner and their bedtime routine before eventually passing out in the middle of Izuku reading their nightly chapter of James and the Giant Peach . He surreptitiously tucks a bookmark in between the pages of the novel, sets it on the bedside table and worms his way out of Eri’s sleepy embrace. He pulls the covers up over her sleeping body and creeps out of the room as stealthily as a 6’4” musclebound superhero can, shutting the door behind him with a soft ‘click.’
Katsuki is lying in bed with a book when his husband gets back to their bedroom. Izuku shuts them in before making his way to the toilet where he can use the bathroom, brush his teeth and clean off the sweat of the day with a cool, wet washcloth.
When he comes back, the book has mysteriously disappeared from Katsuki’s lap and he’s sitting up, covers falling down to reveal the tanned expanse of his belly.
“Is Eri asleep?” He asks in a whisper.
“Yeah, she’s absolutely dead to the world.”
Katsuki smiles softly, “She always is after days like this.” He pats the mattress next to him. “Get over here, you.”
Izuku obliges him, slipping in between the sheets and crowding into his husband’s space.
Katsuki is immediately up in his lap, biting at his lips and pushing the tshirt up and off his body. Izuku tries to keep up, answering Katsuki’s kisses by opening his mouth and letting out quiet, tamped down moans. His arms wrap around his husband’s waist and he discovers that Katsuki is completely naked underneath the blankets.
Izuku groans again, and reaches for Katsuki’s ass, but the blond pulls back, a mischievous smirk on his lips.
“Always so mouthy, Deku… As much as I love to hear it, that’s not going to work tonight. Can’t have you waking someone up and ruining all my plans for you.”
“Plans?” Izuku asks in a daze, still a little kiss drunk, “What are you talking about, Kacchan?”
Katsuki opens the drawer to the bedside table and pulls out a ball gag. It’s all black silicon with a faux-leather strap, small enough not to stretch out his jaw, but he knows that it’ll still stuff his mouth full and keep him quiet. It was also definitely not there this morning, and a little thrill zips through Izuku wondering what else his husband might have prepared for him tonight.
He opens his mouth obediently to let Katsuki slip in the gag and secure it around the back of his head. Izuku lets his tongue curl around the weight of the silicon, accustoming himself to its gentle plastic taste. Katsuki pets his hair softly.
“That’s my good slut,” he murmurs, before pulling something else out of the drawer. It is a pack of markers, ‘washable’ and ‘safe on skin,’ according to the bright packaging. Izuku recognizes it as something they bought for one of Eri’s birthday parties for a face painting station, but never ended up using. He quirks a curious eyebrow at his husband.
Katsuki pulls out the black marker and taps the tip of it against Izuku’s nose. “I just think you need some reminding, is all, about just whose slut you are.”
Suddenly, it dawns on Izuku what this is all about. The park, that woman in the purple workout gear. Katsuki’s still jealous! Izuku secretly likes it when his husband gets possessive like this. It makes him feel precious, to be guarded so carefully, and he’ll never get tired of the reminder of just how much Katsuki wants him.
So when Katsuki scrapes the cap of the marker against his nipple, he lets out a slutty little whimper and arches his back, presenting himself for his husband.
“Good boy,” Katsuki purrs, rewarding Izuku with a kiss on the shoulder that turns into a bite. He worries the skin until it blossoms purple and red, then switches to the other shoulder and does it all again.
“Can I mark up your neck?” Katsuki asks the question with his face pressed against Izuku’s jugular as he noses at the tender skin. Izuku moans around his gag and nods fervently. He has plenty of foundation left to cover the hickeys, and he wants to feel the deliciously sharp pain of Katsuki’s teeth against his throat.
His Kacchan gives him a whole collar of love bites, lined up one against the other so they overlap in a perfect crescent on his freckled skin. Each one tingles through Izukus’s skin, settling into a quiet ache before fading entirely. When Katsuki finally pulls away, it’s with a small wet smack. He studies his masterpiece for a moment before he uncaps his marker and begins to write.
“Kacchan’s little pet,” Katsuki whispers the words into his husband’s ear so he can picture the writing that’s being painted onto his skin.
Izuku shivers with longing. He can feel his cock plumping up and pressing against the soft cotton of his pajama pants. More, he wants more! He has to concentrate on holding still, hands on his knees as he waits patiently for Katsuki to finish writing. He knows that his Kacchan will never be satisfied with just a couple hickeys and a single phrase scrawled across his skin. He’ll get more, if he can be good. He always wants to be good for Katsuki.
Before long, Katsuki moves down Izuku’s chest to his nipples. He circles one finger around and around the pale pink skin until it tightens into stiff, sensitive peaks. The blond makes eye contact with Izuku, staring deep into his eyes as he closes his soft lips around one of the pebbled little buds and lavishes attention onto it with his tongue and teeth.
Izuku lets his eyes flutter shut and sinks into the feeling, but all too soon Katsuki is pulling away in a rush of cold air against Izuku’s wet skin. The big man whines a bit around his gag, but stops immediately when he feels the tip of the marker against his right pec.
“Mine,” Katsuki writes, and then on the left, “Also mine.”
Izuku glows with pride.
Katsuki grins back at him, and presses one hand against his chest to push him back against the mattress. “Grab the headboard with both hands, and don’t let go until I say or you need to be done.”
Izuku nods furiously and wiggles out of his sweatpants, chucking them across the room and onto the top of the dresser. The wood of the headboard is smooth under his fingers when he grabs at it. His hands fit easily around the slats, and he knows he’ll have to be careful not to crush them in his grasp if things get too intense. It’s happened before, and nothing pulls him out of the moment quite like splinters in his palms.
Katsuki hovers over his husband and lets his eyes rove over that perfectly sculpted body for a moment before he dives in to write the next line across Izuku’s belly. “Cock slut” goes over his navel while “Katsuki’s dildo” goes under it, with a line pointing down to his dick.
When Katsuki shifts down between his husband’s thighs, Izuku spreads them wide, bearing as much of the pale, sensitive skin as he can. Katsuki chuckles darkly and bites into the soft, smooth flesh. Izuku lets out a squeak around the gag in his mouth and squirms until Katsuki steadies him with one hand.
“Hold still, or you’ll smudge the ink.”
Izuku obeys quickly, waiting for the press of the marker tip and another filthy title to fall from Katsuki’s lips.
“Desperate,” the blond coos, scrawling across Izuku’s left leg. “Needy hole,” goes on his right, and Izuku clenches down, realizing suddenly how empty he feels. He spreads his legs wider and grinds his ass against his husband’s knee where it rests against the bed, wanting him to hurry up and fuck him already.
Katsuki only places a gentling kiss on his thigh and shakes his head, “I almost forgot something, so be patient.” He moves slowly up over Izuku’s body until he’s crouched over his chest. One hand tilts Izuku’s head up until his throat is bared and Katsuki writes, torturously slow as Izuku tries to stay put. “Fill me.” The words sprawl across his Adam's apple and he can feel the strokes of another arrow pressed into his skin, pointing towards his mouth. How desperately unfair, when Izuku only has a small ball of silicone to suck on, to remind him how much fuller his mouth could be. Katsuki’s in the perfect position too, perched across his chest, and Izuku tries to show him. He cranes his neck up to nose at his husband’s crotch.
Katsuki holds him back with one hand to the forehead, smirking slightly. “I think you forgot who’s in charge here tonight, ‘Zuku. Forgot who you belong to.” Izuku moans around his gag, and a bit of drool leaks out around the corners, dripping down his chin.
“That’s right, baby… You’re mine. And I can do whatever I want with you,” Katsuki grabs onto his cock, stroking once, twice, before tapping the tip of it against the gag in Izuku’s mouth.
Izuku can smell him, musky with a slight tang of sweat. He’s so tantalizingly close but Izuku can’t even feel the silky touch of cock against his lips. There’s nothing but a slight pressure as the gag is pushed back against his tongue. He almost wants to rip the thing off, grab Katsuki by the hips and devour his cock until Katsuki has to bite his hand to keep from screaming at how good it is.
Izuku takes a deep breath in through his nose, then out. He can be good; he can be patient. Katsuki always gives him what he needs.
“Good boy,” Katsuki croons, stroking Izuku’s cheek with his free hand, and Izuku melts into the sensation. He can feel his body relax, the desperate need for a cock in his throat diffused by the sweet victory of Katsuki’s praise. “Such a perfect angel for me. My sweetest boy. I’m going to get off you now, then I want you to turn over for me and get on your hands and knees. Can you do that?”
Izuku nods, and Katsuki pulls away. Izuku releases the headboard, and his fingers groan slightly in protest, but then he’s on his front, with his ass up in the air and all he can think about now is the cool feeling of air against his bared hole. He clenches down again, wishing he had something to push back against his inner walls.
Then something is touching Izuku’s back and he has to fight a disappointed whine, because it’s not Katsuki’s hand. It’s the tip of the marker again, writing in broad strokes below the small of his back.
“Katsuki’s cum dumpster…” The words are filthy and perfect, especially said in Katsuki’s scratchy growl of a voice. The marker keeps going, drawing a perfect arrow towards Izuku’s ass cheeks. Izuku quivers in anticipation.
There is a soft ‘click’ as the marker is capped and then laid aside. Izuku hears the drawer to the bedside table open, and there’s a moment of nothing, then a slicked up finger pressing against his hole.
Izuku groans and bears down on it, sighing in relief when he can feel Katsuki’s finger slide all the way inside him, getting him ready to be filled. Katsuki fills the silence of the room with a litany of praise and insults in turns, as he opens Izuku up. “Gorgeous angel,” “filthy slut,” “my perfect little whore.” Izuku revels in it all, and soon he’s fucking himself back onto Katsuki’s hand, begging for more, for Katsuki’s cock to stuff him full.
Katsuki’s hands slip out of him and there is a moment of emptiness before the blunt, slicked head of Katsuki’s cock is pressing against Izuku’s rim. Slowly, the blond sinks inside his husband until his hips have settled gently against that perfect, freckled ass. Katsuki lets out a long, contented sigh, just reveling in the sensation for a moment. It’s like a hot bath after a long day of work, a soothing welcome that he can’t get anywhere else. It’s been so long since they’ve done this… Katsuki bites his lip and rocks his hips forward, relishing the tight squeeze around his cock.
“God, I missed this,” Katsuki murmurs, leaning forward to spread himself as far as he can over his husband’s back, “I can’t even remember the last time I got off. Isn’t that sad?”
Of course, Izuku can’t answer. And that’s almost the point. He can make sympathetic noises and wiggle his slutty little ass, but at the end of the day it’s Katsuki who gets to ask the questions, and Katsuki who has all the answers.
“It’s almost better this way though, you know?” Katsuki smooths his hands down Izuku’s flank, loving the soft feeling of skin beneath his fingertips, “I got to save it all for you. By the time I’m done, you’re gonna be so full of me you can’t even move anymore. It’s gonna be so deep in you that you’ll still be leaking when you go to work tomorrow. You’re gonna be so wet for me.” Katsuki still isn’t doing much more than grinding his hips in slow little circles against Izuku’s ass. The nerd is whimpering around his gag and trying to hold still, but given the tremble in his thighs, he can’t hold out much longer.
“Come on, doll. I know you want me to fill you up. Why don’t you show me how much?”
Katsuki’s command is like the fire of the pistol at a race’s starting line. The tension, the power in Izuku’s coiled muscles is let go all at once. His hands fly up to the headboard, using the wooden slats to shove himself back onto his husband’s cock, ramming against it over and over.
“That’s it,” Katsuki moans, slamming his hips forward to meet his husband’s in a desperate rut. He isn’t going to last long, but it doesn’t even matter. He knows he’ll get hard again, and it’ll be even better the second time, when he slips into Izuku’s already cum-sloppy hole.
He ruts against Izuku for a few more minutes before he can feel the insistent thrum of an orgasm building in his groin and he thrusts in deep before releasing, emptying as much as he can into his husband. It’s probably one of the least satisfying orgasms he’s ever had. He still feels the desire running under his skin, the need to fuck and claim and devour Izuku. He still has so much more to give his nerd, that he’s almost surprised to see how much cum is leaking from Izuku’s hole when he pulls out. He lazily pushes it back inside with one finger, smirking at the way Izuku whimpers in confusion.
“Hold still, pretty baby, there’s more for you.” He leans down to press a kiss against Izuku’s ass cheek, soothed by the feeling of sweat-cooled skin against his own feverish face. When Izuku tries to sit up, he shoves him back down again, as gently as he can. “Don’t move or it’ll all come out…” he warns. Maybe Katsuki should have grabbed a butt plug, but there is something satisfying about making Izuku wait, patiently presented, for another load.
Izuku sighs and snuggles into the mattress, rocking his hips back and forth. His dick is only half hard, Katsuki hadn’t touched it to help Izuku pace himself, but now it looks delightfully tempting. He hoists himself back up onto his knees behind his husband, reaching around to stroke his belly and down to his cock.
As he teases Izuku to full hardness, Katsuki’s gaze travels the broad expanse of his back, across the adorably dotted freckles and moles, past the hard-won scars and to the words written there in his own hand: ‘Katsuki’s cum dumpster.’ Fuck, but it sends a thrill through him. He’s all Katsuki’s, to fill as much as he wants. And he loves it.
Katsuki’s almost all the way hard again, and with a few short tugs to his cock and a fresh smear of lube, he’s ready to press back inside Izuku. His husband is so wet and tight inside, clenching around Katsuki’s length when the blond reaches down to fondle his balls.
“How much more do you think you can take?” Katsuki muses, “Two rounds? Three? Fuck… if we had the time, I would just tie you to the bed and keep you there. Whenever I wanted I could just come back up here and pump another load into your ass, and you’d love it, wouldn’t you?”
Izuku moans around his gag, a little too loud to be safe. Katsuki stills and listens for a moment, but when he hears nothing stirring, he starts up the grind of his hips again, petting Izuku’s hair reassuringly.
“Poor baby… Can’t be as slutty as he wants. Don’t worry, you’ll look like a filthy whore by the time I’m done with you, I promise…” Katsuki snaps his hips forwards again, startling a whimper out of Izuku. The blond chuckles. He loves his husband’s little noises, especially when he can coax them out of him like this.
It’s time to make good on his promises to Izuku. Katsuki grabs onto his husband’s shoulder for leverage and grinds into him, quick and dirty. He can feel the moment he finds Izuku’s prostate. The big man’s knees crumple and he slides down into the mattress. Katsuki follows, slamming into him again and again so that Izuku’s hard cock is rubbing against the sheets on every thrust.
Izuku is barely even pressing back against Katsuki anymore, too caught up in the way he’s being filled and fucked by his husband. He’s clutching at the sheets like it’s all he can do, and hoping that the gag muffles the moans he can’t keep back. He doesn’t want Katsuki to stop again. With the friction on his cock, he could absolutely cum like this, and soon.
“Such a pillow princess,” Katsuki teases, “Come on, slut, put your back into it for me.” He reaches down and grabs Izuku by the hair, yanking him up and back so that now Izuku is sitting in his husband’s lap. He twitches his hips up, seeking the press of the sheets against his dick, but there’s nothing but empty air. Izuku whines.
A warm hand encircles Izuku’s dick, and he can feel the warm puff of Katsuki’s breath on his shoulder, “Come on, baby… Fuck into my fist. Earn your prize.”
Izuku obeys.
It’s a bit awkward at first, shuffling his knees into position so he can bounce himself up and down on Katsuki’s prick. His husband leans back on one elbow, watching the show of Izuku’s ass jiggling as he moves. Katsuki’s old cum is starting to leak out and onto his balls, adding to the sticky slap of their sex.
Izuku looks down at himself, and finally he catches a glimpse of the writing covering his thighs, perfectly illuminated by the shine of their bedside lamp. ‘Desperate,’ ‘needy hole’ he reads, and God, nothing’s ever felt more right. He fucks up into Katsuki’s fist as hard as he can, he’s so close his balls are starting to tighten and then--
Katsuki’s hand is gone. Izuku turns back to look at him, trying his best to pout around the ball gag in his mouth. Katsuki grins in that evil, egomaniacal way he has.
“Make me cum again and then you can get off. I want to finish at least two more times tonight, so I need to make sure you can keep up. Go on, pet. And just be glad I didn’t cage you up this time.”
Izuku considers tapping out for a fleeting second, or just wrapping a hand around his cock and cumming so they can roll over and go to sleep. But then he thinks about Katsuki’s promise… How much could he take? How filthy could his husband make him? He wants to find out… He wants to be full of him; he wants it to last. Izuku presses his palms against the bedspread, pushes back against his husband and fucks him like his life depends on it.
“There we go… Just like that. So perfect.” Katsuki moans, and the praise sends a thrill through Izuku’s body. He loves being good for his Kacchan; he always gets rewarded for it in the end.
And then the warmth is blooming inside Izuku’s belly again. He feels Katsuki’s sweaty forehead pressing against his back as the blond cums, a soft grunt of satisfaction pushed out between his lips. Izuku clenches, milking Katsuki for all he’s worth. He tips his own body forward this time, pushing his ass up in the air so all the mess stays in him, just like his husband wants.
“Fuck, yeah. That’s my good boy. You look so pretty like that…” Izuku feels the gentle stroking of Katsuki’s fingers against his taint, pushing more cum back inside him. Even that small sensation is enough to make his cock jump up and slap against his belly. He’s so sensitive right now, still right on the edge of cumming, and Katsuki knows it.
The blond croons again, whispering his fingers up and down Izuku’s inner thighs, and it’s so good, so much it’s like being zapped by a live wire. He trembles and whimpers. He can’t decide if it’s too much or not enough, his thoughts narrowed down to ‘ Kacchan, Kacchan, Kacchan.’
When Katsuki finally slides back inside him, he almost wants to cry with relief. Izuku tries to push back, to fuck himself to finishing on Katsuki’s cock, but his legs are weak and trembling. He crumples to the mattress, and he loses Katsuki’s dick in a rush of cum and lube that trails sticky down his thighs.
“‘Zuku?” Katsuki sounds worried, and Izuku feels a hand smoothing down his back. He hopes it doesn’t smear the writing there…
He peeks over his shoulder to see his husband hovering, ready to grab Izuku a towel and a glass of water and tuck his tired love into bed. But Izuku still hasn’t cum. And he can see Katsuki’s still hard and wanting. He wants to be full, to be claimed by Katsuki, so instead of removing his gag, he flips onto his side and lifts his thigh, presenting his hole for Katsuki.
His husband rolls his eyes. “Such a needy slut…” he chides before sliding down onto the mattress beside Izuku and pressing up against his back. Izuku can feel the head of his husband’s cock against his cum sloppy hole and wriggles back, trying to make it catch.
“Hold still,” Katsuki gives Izuku a loving slap across the ass, and he freezes in place. “There we go… That’s my good boy.” Finally, he slides back inside.
Izuku sighs in relief and settles back against his husband with a roll of the hips. When he clenches, he feels Katsuki hard inside him, just where he’s supposed to be. Katsuki lifts up Izuku’s thigh and pulls it towards his chest, so he can drive as deep inside Izuku as he can. All Izuku can do is let him, and bury his face into the pillows when Katsuki finds his prostate and drives into it, again and again.
“There we go, sweetheart… Fuck, you’re so perfect, so fucking sloppy. I just wanna plug you up and keep you like this. Want you this wet every time, any time I want you. And you’ll fucking take it, won’t you? Cause you’re all mine .” And then Katsuki sinks his teeth deep into the meat of Izuku’s shoulder, biting down as he pounds into his husband again and again. Izuku can tell he’s close, can feel the pulse of Katsuki’s prick against his own rim, but this is his third orgasm in… what? An hour? He’s trapped on the edge.
So Izuku moves his hand down to press against his own belly. He hears Katsuki cry out, muffled against his back, panting wet and heavy against his skin. He’s so fucking full of cum and cock and as he presses down, he almost thinks he can feel Katsuki’s dick pressing back against his hand, no matter how ridiculous that is.
And then, Katsuki’s hand is closing around his cock and he isn’t thinking about anything anymore. The first waves of orgasm travel through him, unrelenting, and it’s almost painful after being on the edge for so long. But then Katsuki is bucking up against him, emptying himself as he bites down on Izuku’s shoulder to muffle the moans. Izuku sighs and relaxes into the pulse, letting the clench of it milk out the last of Katsuki’s cum.
Finally, Katsuki pulls out, and Izuku rolls back onto his belly, hips up in the air to keep the mess inside of him. Just like Katsuki asked.
“Look at you, such a greedy little thing… Don’t want any of it to come out, do you?” Katsuki coos, his voice fading as he walks around the bed, somewhere Izuku is too fogged out to think of. “God, you look so good right now… Can I take pictures?”
Yes . There’s nothing Izuku wants more than that. He nods furiously against the pillows and gets a soft chuckle in response.
“Jeez, okay, don’t break your neck about it. Hold on…” Izuku can hear the digitized click of Katsuki’s phone camera going off, again and again. “So pretty…” his husband purrs, “And we didn’t even smudge the writing that bad. That’s fucking impressive. Okay, roll over for me? … There we go. Look at that cute little cock. You made such a mess of yourself for me.”
Izuku flutters his eyes open as much as he can to look into the camera. Really, he’s looking at Katsuki behind it, the fond smile on his face as he clicks picture after picture. Izuku is still amazed after all this time at how handsome his husband finds him, that he would even want pictures like this.
“‘Zuku… I have an idea. Can you stand?”
Izuku nods and pushes himself out of bed. He stumbles forward a bit on the landing but his legs aren’t shaking too bad anymore. He looks over his shoulder at Katsuki, waiting for the next instruction.
“Put your hand on your belly.” The shot is of his back, so Izuku’s not sure exactly why-- “Press down.”
Oh. Oh, fuck. Izuku does as he’s told. He can feel the cum rushing down his thighs in rivulets, and then the warm liquid is trickling past the back of his knees and fuck, how is there so much of it?
In the corner of his vision, Izuku can see Katsuki snapping away at the camera. His dick is valiantly trying to chub up again, but four times in a night seems to be too much even for him.
“God, look at you, so messy…” Katsuki marvels, and then he’s tossing his phone onto the bed and striding over to his husband. Strong arms wrap around Izuku’s waist and he leans into the touch. Katsuki’s hands smooth their way up his sides and shoulders to the cinch on the gag, and finally it’s free, the silicon ball hanging limp from Izuku’s mouth. He spits it out into his hand and begins to work out the tension in his jaw.
“Good job, baby,” Katsuki purrs and presses a kiss against his shoulder. “Need help cleaning up or do you want some time to yourself?”
“I’ve got it,” Izuku’s voice is slightly rusty when he speaks, and he clears his throat, “Thank you, though. You always take such good care of me, Kacchan.”
“Of fucking course! You’re my nerd, what else am I supposed to do?” Izuku can tell that Katsuki’s blushing, even without turning around to look at him. No matter how long they’ve been together, his Kacchan’s still useless with compliments.
“I love you, too, Kacchan. I’ll just be a minute.”
Ten minutes later, Katsuki is tucked under the covers, wearing one of Izuku’s giant ass nerdy graphic tees and his softest pair of boxer briefs, scrolling through Twitter. He looks up when he hears a quavering call from the bathroom.
“Hey, Kacchan, can you come in here for a minute?” Izuku’s voice has gone high and strained, what Katsuki secretly calls his ‘everything is fine’ voice. This can’t be good…
When he walks into the bathroom, he sees Izuku’s green head peeking out from behind the shower curtain, a panicked look on his face.
“What’s wrong, Deku?”
“I’ve been scrubbing for like five minutes, but the writing won’t come off .” He pushes back the curtain dramatically, and sure enough, Katsuki’s filthy words still stand out stark black against his now rubbed red skin. ‘Fill me’ is what’s catching Katsuki’s attention at the moment, shifting every time Izuku’s Adam’s apple bobs in his throat. Katsuki tries and fails to hold back a laugh.
“ What? What could possibly be so funny?!” Izuku fumes, trying to keep his voice low enough not to wake up Eri in the other room.
“I wanted to mark you up,” Katsuki snickers, “I guess I got my fucking wish! Bahahaha!”
“Well, that’s great and everything, except I think you’ve forgotten that I signed up for Bring Your Parents to School Day tomorrow! What am I supposed to do?! My foundation will never cover all this up!”
Oh, fuck . Katsuki had forgotten. “Do you still have your old costume? The full body one?”
“I haven’t fit into that since high school!”
“I could go in for you.”
“... Really? You forgot about your press conference tomorrow, too?”
“No!” Yes .
“Fuck… Kacchan, what am I going to do?!”
“Turtleneck?”
“Turtleneck!” Izuku surges forward, still dripping wet from the shower and into his husband’s arms, “You’re a genius!”
Katsuki buries his head in his husband’s chest hair, trying to hide the blush that creeps over his cheeks, “Yeah, well… Sometimes, I guess.”
The next day, when Pro Hero Dauntless arrives at North Musutafu Elementary School dressed down in a black turtleneck and a crisp pair of slacks, no one thinks anything except what a charming figure he cuts, sitting amongst the second graders on the circle rug and telling stories.
And when Katsuki receives a text from his husband at lunch, no one notices him slip away into the bathroom to touch himself over a close up of Izuku’s freckle spattered skin, his collar of hickies and the words “Kacchan’s little pet.”