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"Papa?"
Aizawa hums to show you that he's listening. Your hands squeeze at the fabric of his pants, cheek nuzzled onto his thigh.
"What do you think he's doing?"
"Who?"
"Onii-san!" you sound exasperated at having to explain, hands pulling at the pant leg to make him look at you on the floor. Aizawa barely looks up from the paperwork he's going through as he answers dryly, "he didn't tell us."
You roll your eyes, "that's why I'm asking what you think."
There's a small laugh from your father. It's one of those soundless, breathing out the nose kind of laughs. You dig your front teeth into his pants, feeling his meaty thigh give underneath the pressure.
Aizawa pats your head, gently pushing you away from him as he jokes dryly, "what, are you teething or something?"
You pout, "'m just curious."
"Hm."
He rolls his chair away from the desk to get a proper look at you, arms crossed on his chest now as he tilts his head.
You're in the dog bed underneath his desk, whining and huffing because your brother told both of you to stay out of his room after dinner.
"It's his birthday tomorrow," you look down, "and he's doing something without me."
"Without us."
You look up at Aizawa with puppy eyes, "yeah, but you have a shift with him tomorrow… I don't."
Aizawa snorts as he reaches down and cups your face, "I have an overlap shift with him, not an actual one. He'll come back from patrol 20 minutes before I go on mine."
You narrow your eyes, "that still gives you more time with him than me."
Your father shakes his head affectionately at you before he pats his lap, silently asking you to crawl up. You jump at the command, eager for the distraction.
Aizawa understands not to argue – it's pointless to remind you that Shinsou will come home and sleep next to you while he's out trotting through a patrol. It's not like he's strict with your bedtime; he hasn't forbid you from staying awake and greet your brother.
Drawing gentle circles onto your back, you cuddle like this for a moment, Aizawa mentally calculating how much time he needs to rifle through these papers, eyes raking over the tablet screen where the statistics from his students are displayed; his lessons plans needs redeeming, because some of his students are currently falling behind instead of improving during Heroics Class.
Reaching for the bundle of papers with his free hand, he goes back to reading while you breathe softly into his neck.
The only sound for a while is the clock ticking behind you.
"Why do both of you always do this?"
Your voice is small, light. Aizawa kisses the top of your head as you nuzzle impossibly closer, face pressed onto his pulse point, "do what?"
"Take shifts on your birthdays."
Aizawa lets his fingers travel down your spine, tracking each vertebrae until he reaches the curve of your ass. He thinks of the shift schedules that have to align between multiple heroes, area maps that needs to be covered and checked off, and paid hours that have to make ends meet, "it's more complicated than that, I think."
You pull away from his neck, leaning your forehead against his, "you never have any patrols on mine."
He can't help the way his lips tug up ever so slightly, "your birthday's special to us."
You tilt your head, "your birthdays are special to me."
Aizawa's not sure he can admit out loud that he hadn't actually thought of that.
But birthdays have never meant much in this household; Shinsou was mostly alone due to his quirk up until U.A, so there were never any other kids to invite. He was around eight when he told Aizawa not to bother anymore. He'd explained quite logically how it didn't make sense to waste energy on it, when they didn't even really celebrate Aizawa's.
Yamada was the one who kept insisting on small gatherings and presents with Auntie Nemuri.
Their wish to have you experience normalcy, traditions, and affection were the main reasons behind why they celebrate yours.
You rub your nose against Aizawa's, "he's been acting weird lately."
"Your brother?"
You nod, lips ghosting over his, "he hasn't taken his shirt off."
Black eyes narrow as he tries to make sense of your sentence. You continue, "when we sleep and have sex."
"Of course he has."
"Nuh-uh, not for a few weeks at least."
You sound confident in your statement, hands reaching up to drag through your father's hair, "won't even let me touch his chest. Do you think he's okay?"
Aizawa tries to think back over the last two weeks, but noticing small details like this have always been hard for him, filtered as irrelevant by his overworked brain, filed somewhere in a folder he doesn't touch.
It's not like he and Shinsou hasn't been intimate in this time frame, but he cannot for the life of him remember what Shinsou was – or wasn't – wearing. He shrugs and kisses you, "I'm sure he's fine."
You're still antsy, squirming in his hold. It's obvious to Aizawa that you're waiting for a command, desperate for the stimulation his body can provide.
Big palms curl around the curve of your ass, squeezing the fat before he pulls at you, dragging you over his soft length. You sigh and arch your back, angling your pussy to feel better, trying to get your father's body as excited as your own.
"Do you think I can go up there now?"
"Princess…" Aizawa sighs, small chuckle leaving him, "he was pretty clear about us staying away."
You drop your head, "but I wanted to be with him tonight."
"I know, but here," Aizawa maneuvers you so that he can pull down his sweatpants, fat cock straining against the elastic, "sit."
Eagerly, you reach for him, desperate to get it hot and heavy for you. Your pussy aches with longing, clenching around nothing as you drag his precum down his length, thumb dragging over his slit and giggling when he hisses.
"Baby…" he laughs when you're barely halfway, struggling to breathe, "didn't I say that I need to work?"
You whine, breathing out in annoyance, "'m doing my best."
It's cute how you huff and puff, working yourself up; prep would've made it easier. Faster, even.
But you insisted that you could do this.
Aizawa can't wait forever, so he fucks up into you, feeling your tight walls scramble to accommodate his girth, fat dad cock stretching out your small daughter walls.
You scream before you smack a hand over your own mouth, turning it into a low groan, pussy throbbing and pulsing.
Your thighs quake around Aizawa as you try to breathe through the pain of the stretch. It's unfair that it still hurts after all this time without prep; you were hoping you could take it easily soon.
Papa kisses your forehead and shushes you, "don't disturb me when I'm working, pup. Sit still."
He then wraps his arms around you to pull you flush against him, giving him his workspace back to look at the papers properly. Your breathing doesn't get any easier.
Silence doesn't stretch out long enough before you whine, "Papa?"
"Hm?"
"Uncle 'Zashi is picking me up at 11AM tomorrow."
Aizawa's eyes narrow. "Class starts at 8."
"I know."
Your father drops his stack of papers and drags his hands over your scalp, "then how come your uncle's picking you up so late?"
"He said I needed the rest."
There's a snort coming from Aizawa at the words; interesting that he thinks to have a say in this. He wonders if he knows what Shinsou is doing. He decides to shrug, "alright. Eat breakfast with your brother then."
You kick your legs in excitement, "yes Papa."
A text chimes in on both of your phones at once. You kick and scramble, desperate to reach for your phone on the floor, curious to see who it is; if it's Onii-san.
"He says to come to his room!" you jump in place once, twice, before you pull at your father to get him off the chair, "c'mon!"
Aizawa understands now why Yamada thinks you'll need rest tomorrow morning.
Shinsou narrows his eyes as he waits for your reactions. It's embarrassing in this position, dick pulsing and straining against the lace edge of the satin panties, garter digging into his waist. On his knees spread out, palms splayed onto his sheets, he can feel his chest turn redder and redder.
Aizawa's the first to speak and move. He slaps your ass before he orders you to go, "fetch."
Your big brother has never seen you take off that fast, footsteps pattering down the hallway before you open the door to your own bedroom. Aizawa then drops his head with a small chuckle, hand going to cover his face.
Shinsou hopes it's in embarrassment and that he managed to fluster his Papa, just a little bit, with this surprise. He squirms in impatience, clenching around the plug in his ass. He can hear the blood rush in his ears, thundering through his veins and heating him up despite the light layers of cloth.
"What do we have here?" Aizawa finally asks, dragging his socked feet over the threshold, eating up Shinsou's shudder, "a stray tomcat made its way into my house, it seems."
His son leans forward, puffing out his chest, palms splaying out on the sheets – the bell around his neck jingles gently. Aizawa reaches out to cup the face. "What an interesting little fella," he muses, gently directing Shinsou's head back and forth as he inspects him, "did you get in through an open window?"
He leans forward to his right to see Shinsou's back, licking his lips as he sees that his son is wearing matching paw socks like yours, a tail attached to the hip garter rather than an anal plug-style tail. He whistles before looking back at the kitty cat.
Shinsou's already panting, chest falling and rising with every breath, eyes glazed over and needy; it seems his preparations have made him aroused. Aizawa drags a thumb over his cheek, his lips, as he speaks, "I wonder how friendly you are."
The cat leans into the touch, gently sticking out his tongue and licking softly at the thumb, eyes locked onto Aizawa's. Then, his mouth pries open and bites the finger; not enough to bruise or hurt, but as a warning, digging into the skin.
Aizawa licks his lips and holds back a satisfied smile.
But he can't ignore the elephant in the room any longer than this, heart beating so fast in his chest he fears that Shinsou can hear it.
"Your sister was right."
Shinsou tilts his head and releases the digit.
"You were hiding something."
Aizawa can't help himself when he torturously slow lets his hand travel from the fat of his underlip and past his chin, ghosting over his neck, thrumming his fingers against his pulse point as he holds Shinsou's gaze in his. He coos gently to keep the cat in his trance.
When he continues, he flicks the bell before he changes speed, quickly and harshly grabbing onto the chains connecting the collar and his nipples, piercings dragging his pointy tits forward, "these are new."
Shinsou keels over with a moan, only held up by the grip that Aizawa has on him, drooling and whining. He sounds delicious like this, shivering when Aizawa continues down to touch the new jewelry and the attached ribbons with a raised brow,
"But not new enough to hurt?"
Shinsou drags his tongue over his teeth as he thinks back to his date with Uncle Hizashi a few weeks ago; the pain mixed with the pleasure of that entire day, rollercoaster of chaos and order.
His dick twitches at the memory of Yamada worshiping him in his car.
He's about to answer, but it seems he's spent too long reminiscing because Aizawa pull at the chains again, "is the kitty cat hard of hearing?"
"N-no," he wheezes, hands digging into the sheets underneath him, "'just assumed you didn't want your puppy to feel left out," he leans forward to nuzzle against Aizawa's tummy. There's genuine annoyance when he can't purr at the feel of his father's erection against him, so he nuzzles harder instead to show his appreciation.
Aizawa hums before he sits down next to the kitty, bed dipping underneath his weight. No matter how hard he tries, it's impossible to hide the amusement or the smile on his face, "you do know that this is your birthday… right?"
His son's unimpressed stare has him chuckling, petting at the soft ears on top of Shinsou's head, color-matched perfectly to his hair, "'m just saying," he smacks his lips, "that this feels more like a present to us."
There's a small, groan-like meow as Shinsou stretches over his Papa's body, arching his back and lounging his torso like a cat on his lap, gently rocking his hips from side to side so that the tail sways with him, eyes peeking up at Aizawa from underneath his lashes, "maybe I know…" he swallows thickly, "…just how well the two of you take care of cats."
Lazily, Aizawa drags his hand over his back and the tail, as if petting a real cat, back and forth, "oh, so this cat wants to be pampered?"
The blush on his son's face is delicious as he bites his lip. Instead of replying, he raises his butt higher, signaling that Aizawa should keep scratching him there before he leans his face down directly onto his father's crotch, inhaling the scent greedily.
He whines when he can smell you too.
Aizawa looks around the room, notices how he's decorated with string lights, an array of toys splayed out on his bed as well. Shinsou admits in the silence, "I know we all won't be home at the same time tomorrow so… I figured I wanted my present today."
"I'm sure that can be arranged," Aizawa promises as he drags his hand over the crack of his son's ass, cooing and humming when he finds a plug nestled in there, "'s this why we weren't allowed in here?"
Shinsou pushes back against the teasing fingers, prepared to be played with. But instead, Aizawa pushes his cat off of him and back into a sitting position, "get ready," he grunts.
And then Shinsou hears you running back towards his room again. He's impressed that Aizawa heard you before he did.
"Listen, little kitty," he scratches behind Shinsou's ear as you emerge in the doorway, panting and smiling, "my puppy's sweet but she can be…" his eyes follow you as you hurry into the room, practically jumping onto your brother, making him groan at the impact, "…eager."
You lick and kiss at your brother's stomach, koala-hugging his lower body in a tight grip. Aizawa whistles and pulls you away by your collar, lifting you onto his own lap, "hey," he growls when you still reach out for the cat, "you don't wanna startle the kitty, do you?"
You whine like a pup at being held back as you finally get a proper look at him, pupils blowing wide at the piercings and bows on his chest. Shinsou almost wants to curl in on himself under the intensity of your attraction. They almost look shiny and unfocused, but he knows how intently you're taking it in.
Aizawa puts you down onto the floor, "sit," he shoots you a warning glare, deterring you from defying him, "you can't play with this pretty stray until I've made sure it's safe."
Shinsou shivers, goosebumps spreading over his arms as Aizawa looks him up and down, "can't have you spreading diseases to the pup. She hasn't been vaccinated yet."
The joke is dry, but Shinsou's blood still thrum and whir, excitement rushing through him. He can feel his dick spit out precum unto his stomach, making his happy trail shiny and sticky. Aizawa grabs onto his jaw and pulls him closer before he thumbs up at Shinsou's eyelid, examining one before the other. He pretends to remove the eye goop by the corner of his eyes as if he's a real cat.
Shinsou holds his breath.
He then checks the ears, massaging at them and pulling gently, "no scrapes or cuts," he comments before he moves onto his nostrils. Shinsou can't stop looking at Aizawa's face. It's soft, affection evident in his eyes as he pretends to look him over, fingers prodding at his skin. He's hoping he doesn't look as lovestruck as he feels.
He gasps when Aizawa pries his mouth open, pretends that he doesn't want to. But the big hands are stronger, more demanding and he whines when Aizawa drags his fingers over the canines, "looks in good health."
Then he leans in as sniffs the mouth, which has Shinsou's toes curling, suddenly afraid that he can smell the dinner he had earlier. His lashes flutter with the movement, sticking out his tongue for his father to examine as well.
Aizawa pulls at it, mulling over the color, "maybe a little dehydrated."
There's a slight shudder when he continues down to his shoulders, massaging at them, cooing and praising him for being still, "'s a good kitty, this one. Cared for, too."
You thump against the floor with a whine when Aizawa lifts an arm, pinching at the muscle there as if assessing its strength. Aizawa doesn't have to do much but direct a threatening stare your way before you immediately freeze and stay quiet.
Shinsou almost laughs.
But then his father raises his arm high and pushes his nose directly into his armpit hair and sniffs. Shinsou drops his head to hold back from panting, shutting his eyes tight to stop his body from cringing at the feeling; he feels so exposed.
"Aaah," Aizawa sighs after he finishes scenting him, seemingly satisfied with what he found, because he moves on then, prodding at the ribs, feeling out each one. Shinsou puffs out his chest again, hoping that Aizawa will play with the pierced nipples, but his father expertly avoids them, pressing and prodding on the fat of his tummy instead.
First by his waist, making him whimper, and then around his belly button, thumbs driving circles around it, watching how the soft skin gives underneath him.
Shinsou's strong – has to be, when his quirk isn't physical – but his stomach looks more soft than ripped when he doesn't pose. Aizawa loves this about him, pressing and pawing greedily, waiting to see if Shinsou will get agitated and move away from the touch.
"Look pup," he comments with a raspy voice, "kitty seems comfortable with us."
You tilt your head before you slowly lean forward, resting your chin by the edge of the bed with a huff. Aizawa chuckles, "I'll introduce you in a second, yeah?"
Shinsou hadn't realized how long he'd held his breath, suddenly woozy from lack of oxygen. His eyes flutter, thighs shaking when Aizawa pulls them apart, petting the inside softly, gently.
"Ssshh," he gently coos, determined not to startle the little thing, "good kitty."
His dick spits out another glob of precum, this time staining the panties. You howl low and sad, but stay still.
"This kitten's well-groomed," he muses, fingers curling against his balls, touch feather light, smirking at the way he jumps at the soft touch, "well-endowed, too."
Oh, it's humiliating. Shinsou leans forward to hide his face on his father's shoulder, unable to hold back his whimpers at the role play. Aizawa coos at him, scratches behind his ears with his free hand, "such a cuddly little thing, aren't you? So trustful of whoever you meet, it seems."
In reality, Shinsou had planned to be more defiant, be the kind of cat you'd have to work hard to impress, play with the nature of a more self-reliant animal.
But the hunger in the four eyes locked to him as him turning meek, light-headed. He reaches for Aizawa's shirt and paws at it, pulling and stretching the fabric. Aizawa tuts at him, "nuh-uh, kitty, don't ruin fabric with your claws."
Gently, he pries him off of him, guides the hands back onto Shinsou's lap.
"Almost done, little one," he promises, "easy there, right?"
Shinsou hasn't noticed the way one hand stays on his shoulder to keep him in place until Aizawa grabs at his ass, digging into the pliant skin as his fingers bump against the plug inside of him.
"Oh?"
Aizawa sounds amused, the bastard.
He circles it, pushing and prodding, before he grabs onto it roughly and pulls.
Shinsou shrieks, almost jumping out of his own skin despite expecting the rough action. Aizawa starts fucking him with it, the squelch loud in the room. It serves to make the puppy on the floor antsy, drooling onto the bed as you watch your brother's eyes cross from the stimulation.
You're humping the air in the same tempo before you kick your hind legs against the floor in impatience, but you decide not to bark or howl… not yet, at least.
He wants to lean forward. It feels almost impossible to keep himself upright, but the big hand on his shoulder forces him to stay in this position, cock jumping with every thrust. The bell around his neck jingles in a rhythm that rings so loud in Shinsou's ears, unable to make his eyes focus on anything, overstimulated already from absolutely nothing.
"Papa," you whine, dragging your paws against the bed frame, scratching at it, "lemme join."
Aizawa laughs as he looks down at you while speaking to him, "what do you say? Does a tomcat like you have the energy to deal with a young puppy?"
Shinsou wants to bite out a retort – any retort about Aizawa's refractory period or age – but Aizawa pulls out the plug completely as soon as Shinsou opens his mouth, so all that comes out is an embarrassingly high-pitched moan, falling forward as his father lets go of his shoulder.
You jump at the weakness, crawling into Shinsou's lap eagerly, repeating your father's examination but with your nose instead. You manage to topple Shinsou over, letting him land on his back with a whine as you nibble and suck in-between scenting and sniffing every inch of his skin you come by.
Your paws holds him down by his collarbone as you reach the chest, whining at the shiny jewelry before you peak out your tongue to lick at them. They're warm to the touch, just like Uncle Hizashi's. The bows so prettily attached are in the way for you to bite around it and it makes you whine, dragging your soaked cunt over your brother's thigh, agitated from being held back.
Aizawa watches the two pets interact, Shinsou trying to return the favor, pawing and sniffing back at you, but being outdone by your eagerness. As you crawl further down his torso, Aizawa pulls at your tail. Your head jumps out with a warbled moan when it teases at your hole, "turn around, get properly acquainted."
The order is easy to understand. You gulp before you crawl around, careful to have your knees weigh down around Shinsou's head without accidentally pulling at his hair and hurting him. As you get on eye level with the lingerie he's wearing, you can't help but shake your head to regain your focus, eyes blinking again and again.
"So pretty," you whine, voice low and hungry, "pretty Onii-san…"
You leave a soft kiss on the top part of the panties, hands reaching to spread his thighs a little more. It's not until he's all pretty and spread for you that you even start to kiss at the head peeking out. Shinsou groans, breath hot against your pussy.
When he doesn't reciprocate the gesture, you bite at his hipbone, giggling at the way his leg jump. Aizawa tuts too, "you gotta meet the pup-pup halfway there," he agrees with you.
Dropping your face onto his cock with a moan when he licks a fat stripe up your slit, it takes everything in you to not just lie down and simply receive.
But this is his day; so you double down and eagerly lick at the bulge, following his length underneath the fabric, sniffing hungrily at him too. Shinsou whines and groans underneath you, hands coming up to spread you apart for him.
It's disorienting, how he's decided to only kitten lick at you. It makes your clit throb and jump.
"You like the kitty?" Aizawa asks you, gently petting the top of your head. You close one eye and push back against the delicious scratches he gives your ear before you kiss the dick underneath you again with a hum.
With a laugh, Aizawa admires his two pets for a moment.
Shinsou's milky thighs look beautiful in thigh highs, toes curling and pressing against each other at the way the dog laps at him. There's a light sheen of sweat glistening on his skin that Aizawa has to stop himself from licking off.
He looks to the toys further on the bed, formulating the plan for tonight.
There's a wide variety, something that Uncle Hizashi has no doubts been part of orchestrating. As his gaze turns back to the two hungry pets, he clicks his tongue and pulls at your collar again, pulling you off of the kitty by the scruff of your neck, "that's enough getting to know each other. Lie down."
You stick out your tongue like a dog as you jump onto your back on the bed, holding up your paws like a dog too. Aizawa gives you a smile and a nod to show you that he approves of the position before he turns to the cat, "you want to use all of your toys today, kitty?"
It's absolutely lewd how blown out his son's pupils are, cheeks a deep shade of red as he tries to catch his breath. He seems to struggle with words, opening and closing his mouth like a fish before he decides to just nod.
"Very well," Aizawa decides not to tease him for going non-verbal while reaching for one of the silicone cock sleeves, choosing the one with bumps and textures as he smiles at the kitty, "you want this one?"
You whine and stretch your legs against your father's side, "what is it?"
Nothing like hands-on learning, right? Aizawa hands it to you, "put it on the cat."
You hold it in your palms gently, turning it side to side for a moment. It's see-through and bumpy, not even half the length of your brother's cock – soft to the touch, you can bend the material easily, the knobs and bumps feeling funny against your palm.
You sit up properly to face your brother and pull down his panties gently, letting them strain against his balls. With your soft paw, you jerk at his length once, twice.
"Let the cat smell it first, so he knows what it is," Aizawa instructs. Shinsou dutifully sniffs against it before he rubs it with his cheek multiple times. You giggle and coo at how cute he is.
But then it ends next to his length; you keep eye contact with your brother as you ask your father, "will it hurt?"
Shinsou shakes his head, thighs trembling from the anticipation. He wants to fuck you with this one on so bad after Yamada fucked him with it and showed him how good it feels.
"It looks like it's too small," you whine, holding it right against the head of his cock. Shinsou has to hold himself back from fucking up against it. Aizawa laughs behind you before he crawls over, chest flush with your back. He then takes your hands in his and kisses your cheek quickly.
"He's a street cat, remember? They can handle a little bit of everything."
"B-but—"
Aizawa interrupts your complaint by forcing the stretchy plastic around his son's dick, sighing at the way he throws his head back and whimper, all pretty for the two of you.
"See? He's feeling good," Aizawa instructs, making you pull it further down, "get the massager."
Your father curls his palms around his son's length, clenching his grip in a rhythm that has Shinsou looking up at him with a whimper stuck in his throat. It's so tight around him, acting like a cock ring, preventing him from ejaculating. He hiccups and claws at the sheets beneath him.
Aizawa clucks his tongue and lightly slaps the hand, "didn't I say not to ruin fabric? Hm?"
As if burned, Shinsou pulls his hands away from the sheets, mirroring your position earlier by holding them up like animal paws, bent at the elbow. It seems to satisfy his new owner.
"Good kitty."
You come back with the wand before you spread your legs, thinking that Aizawa is going to use it on you, but he chuckles and kiss your forehead instead, "today we're pampering this little kitty, yeah? Welcoming him into our opens arms by showing him how good we can make him feel living with us."
You gulp and nod, eyes glazing over as you watch your brother in this delicate state, whimpering and quivering in anticipation. Your eyes look dark and hungry, all-consuming.
The vibrating wand comes to life with a whir, before Aizawa pushes it against the silicone around his son's length, shifting the pressure ever so slightly in an unheard rhythm so that Shinsou never knows what to expect.
"You like that?"
He whines and whimpers and hiccups so prettily, sobbing out and drooling, head going from one side to the other in agitation. Your hand reach for your pussy in excitement over your brother's pleasure, aroused by watching him feel good.
The vibrator and the bell are in a match-off, fighting to be the loudest sound in the room.
Aizawa laughs at you before he demands that you crawl on top of the kitty if you can't sit still. Your hips lock around his hips but then your father pushes at you, forces you further up your brother's stomach, "lean over."
You don't understand what your father has planned until he pushes the wand against you, jumping and crying out for him in surprise, paws pulling at the kitty's soft fur.
Your father alternates who he stimulates, pattern and pressure unpredictable for both pets. Aizawa groans at the way your sticky juices connect you to the wand and subsequently to your brother.
"Feels good, little ones?"
Both pets whimper out shaky mhms and yess, staring into each other's eyes with hunger and desperation. Hesitantly, you pet his face before he reaches around your neck and pulls you down, shoving your tits directly onto his face.
Cooing and petting your brother's ears, you try to act like Mommy Ochako acts with you, paternal and coddling, since he keeps licking and nursing. He moans as he wraps his mouth around your entire areola and sucks, clearly uncaring about the lack of milk.
You briefly wonder if Mommy can help you make milk too.
He licks and bites messily, wet sounds loud and obscene. Aizawa laughs wholeheartedly, petting around your tail, "is the kitty still thirsty?" He refers to the way Shinsou drank up your juices before, "or hungry, perhaps? Sadly, my little bitch hasn't been bred yet, so there's no milk there, baby."
You whine and clench around nothing at the dehumanizing language, arching your back and presenting yourself even more to your Papa, thighs shaking. He doesn't take the hint though, just continues teasing both of you with the wand instead of trying to provide for his new cat with everything he's got.
You move away from the stimulation with a whine when he keeps it persistently on your clit. It's too much, you're babbling, trying to explain this to your Papa but he just presses it harder against you as he commands, "lie fuckin' still, pup."
You aren't always sure insisting on toys with Papa was such a good idea after all; he can tease you for so long when he's in the mood that it can be downright torture, aggressive and mean with weapons to make your brain melt out of your ears for hours.
The wand is then angled down onto Shinsou's sleeve, but now your greedy pussy suddenly feels left out despite crying and complaining, so you pull yourself back down on top of the wand and Shinsou's cock, a sandwich of pleasure, moaning and dropping your head at the way the feel of the vibration change against you with the force.
Like animals in heat, both pets starts rutting and grinding against the wand, against each other, whining and moaning and wailing in pleasure as you hold on to each other, scratching and pulling. Aizawa watches how both of you greedily chase pleasure, decides to let you have this as he palms at himself, hungry to fill Shinsou up soon.
But first, there's something else that must be done.
You cum with an arched back, dripping onto your brother messily; Aizawa realizes that you're peeing with a long groan, thrusting up into his own hand at the mess you're making of you both.
"Fuck, bad pup, bad pup," he groans, biting his lip to hold back a moan at the way the fur of your tail soaks too.
Shinsou hasn't even realized, still whining prettily at the stimulation but unable to cum from the sleeve around his length. You fall down onto your brother with a cry, breathing heavily as your wetness continues dripping over Shinsou's white lace, staining the delicate fabric before it stains the bed underneath the two of you.
Aizawa lets up and pulls away the wand, Shinsou shaking as his legs fall back down into a relaxed position. He seems to think it's over now that you got to cum.
But just because it isn't Aizawa who put out all these toys, doesn't mean it's not his job to use them.
He reaches for the shiny dildo, pink matching his sweatpants, as well as the lube. Shinsou realizes the wetness on himself and squirms, unsure whether or not he wants to be covered more or less in it.
You babble out nonsensical apologies, lapping and kissing remorsefully at your brother's face, hiccuping in between, thoroughly mortified by the experience.
Aizawa pats your behind, scratches at the soft skin, "'s okay puppy, you were just excited, yeah?"
He'll amend your behavior at a later time; after all, it's his responsibility as your owner to catch and stop you in the act – he'd been too busy staring at it happening than correct you properly.
You nod and nod, continuing to wet your brother's face with your tongue in your shame, woeful and sweet all at the same time.
Shinsou tries to comfort you, paws circling at your hips and waist, grabbing softly at your fat and guiding you to grind against the textured sleeve.
The sharp inhale is absolutely delicious when you feel the knobs against you, the stimulation foreign and exciting. As if you didn't just pee yourself through an intense orgasm, you start greedily rubbing against him like a bitch in heat, tail moving back and forth with you.
"O-Onii-san—"
You seem to forget all about begging for forgiveness.
Shinsou does too, when his father prods the dildo against his hole; he might've stretched it and plugged it earlier, but the pink dildo is almost as thick as Aizawa, prying its way in mercilessly. Shinsou's legs kick clumsily as he tries to gather his senses and escape the intrusion.
"Fuck—hnng."
Aizawa grabs at his legs with a hiss and pull at him, back onto the fake cock and back against your swollen folds.
It's almost too much and they've barely begun. Shinsou almost regrets the whole setup, every nerve ending wired and on fire. Yamada filled his head with way too many ideas and he got greedy and chose them all.
"P…Papa!"
He cries and sobs, claws digging onto your back, reddening the skin. You don't seem to mind, howling and barking at the pain mixed with pleasure, pliant and needy after your first orgasm as you grind against him.
It's lewd, Aizawa thinks, to see his kids completely fucked out in pleasure like feral little things. Youth these days. He considers recording you, like Shinsou says is safe to do if stored properly, but he can't make himself look away from the filthy display in front of him, unwilling to waste precious seconds looking for a phone.
"That's it, taking it so well," Aizawa commends before he turns on the vibration. Shinsou yowls at the feeling, twitching and jumping.
His cock twitches and drools inside his sweats, sweat trickling down his back. You're both so pretty like this, thigh fat spilling from the edge of your socks, cute pink paws curling and twisting on the bed. Aizawa fucks Shinsou harder, watches how his balls jiggle and move, bell still jingling loudly in the room.
"Tighten up," he commands, as if the toy can actually feel him clenching.
Jealousy sparks inside of him still, because he wonders who helped Shinsou pick out this outfit. The panties, open in the back and a mix of satin and lace in the front, paired with the pretty hip garter, holding both his tail in the back and the top of his socks; who has seen this before he has?
He fucks the dildo even harder than before into his son.
"Up," he growls, trying to distract himself from the spiking heat. You scramble to immediately follow your owner's orders, clumsily falling onto your side, before rolling onto your back, so that you can get back to showing off your tummy, bending your legs so that everything is in full view for Papa.
Your tongue is lolling out as you pant like a dog.
Shinsou instead completely crumbles as every muscle forgets how to function, legs and arms sprawling out on the bed as he tries to catch his breath. Aizawa yanks out the dildo, eating up the way Shinsou curls in on himself, "I said up, kitty-cat."
It's clear how Shinsou struggles to make his body follow his brain's orders, toes and fingers flexing as if to test if he still has the control. Aizawa smirks at him, "what's wrong? Too much pampering?"
Shinsou narrows his eyes at him, able to get up onto his knees only thanks to pure spite alone. He's still panting, mouth continuously open as he tries to gather enough air in his body.
He looks like a cat overheating.
Aizawa jerks his chin in your direction, "present yourself."
Then, he looks at his son. His new pet. He licks his lips as he sizes up the pretty collared cat, skin flushed a nice shade of pink as his chest rises and falls. When Aizawa makes eye contact with his cock, it jumps and twitches under the gaze.
You do exactly as you're told, just like the good puppy that you are, getting on all fours and reaching behind yourself, moving the tail to the side and spreading apart your folds.
Steam could be rising from your pussy with how hot and bothered you are.
"She's in heat," Aizawa explains easily, "you better hurry up and mount her."
Shinsou moans at the words, jaw dropping at the implication.
Your brother hasn't fucked your doggy pussy before; it's not that he's been left out of the play, but it's just become something between Papa and daughter. Shinsou hasn't minded, occasionally part of it without being the one fucking you.
But now Papa wants him to breed you?
He clenches and unclenches his fists, unsure how to approach the situation. He then reaches for the sleeve to pull it off but Aizawa sing-songs at him, "nah-ah-ah," he smiles at his son, "keep it on until I say so."
Tapping your ass, he coos at the cat, "c'mon, don't be scared, c'mere… that's it," he praises Shinsou for approaching you, dragging his finger through your slit and gathering wetness, "'stretched her out for you already," he whispers, voice low and raspy, "so be good and give me some hybrids."
Shinsou thinks he might've cum from that sentence alone if he wasn't wearing the sleeve.
Lightly pspsps'ing, Aizawa reaches for his waist, his pretty, pretty waist. His thumbs curls and cuddles the lace by his hips as he pushes and pulls gently, careful not to frighten the cat as he positions him in front of you.
"You ready? Hm? Gonna breed my little puppy well, make her round with pups?"
Shinsou gulps, unsure if he actually is ready. Your hips are swaying ever so slightly, but other than that you keep yourself staunchly in the position asked of you.
He can see your hole fluttering, throbbing and dripping. It's like your pussy is breathing too, whispering secretly and asking – no, begging – your big brother to seed you. Aizawa gets impatient, reaching around for his length, positioning him directly at your entrance.
You squeak when the head of Shinsou's cock catches on your hole. "C'mon little kitty," Aizawa says, the demeaning amusement evident in his voice, "if you don't hurry my puppy will start complaining. She's not easy in this mood, you know."
Aizawa kisses at his shoulder, seemingly filled with never-ending patience and gentleness. Shinsou lets his guard down at the display, breathing in heavily, mentally preparing himself.
But his father's front, the fake tolerance, catches him the second that he falls for it, forcing Shinsou inside of you in one go the second that he relaxed.
He keels over with a moan at the way you tighten up unwillingly at the intrusion. You're squealing, kicking your legs at the foreign feeling, sleeve making the shape and feel of his otherwise familiar cock strange and scary.
You cry, trying to crawl away from Shinsou, but you just feel so good that Shinsou grabs on to your hips and ruts into you, circling his hips desperately.
Aizawa coos and praises him, watches the way his son forces himself inside his unwilling daughter. You've let go of yourself to reach for him, scratching at his thighs, shrill moans and sobs leaving you as Shinsou starts fucking into you in earnest. The root of his dick is strange, bulpy.
"'s weird! Too much!" you screech, desperate for reprieve.
Fuck, this is exactly what he needed for his birthday.
Without guidance from his owner, instincts kicks in and he mounts you properly, whining and moaning as he fucks you in long, confident strokes. The silicone makes the squelch louder as he slides in and out of your soaked hole. You start to get used to the feeling, sucking him in greedily, crying exchanged with moans.
"Fuck, that's it," Aizawa groans, propping himself up against the pillows next to you so that he can get the best view of his pussy-crazed son.
You're like a squeaky toy, letting out a chirp every single time he bottoms out and pushes the air out of you. He watches the fat of your ass jiggle with how hard he's moving, reaching forward to push your head down harshly onto the pillows.
The jingle of his bell is obscene in this context, thighs shaking and trembling with exertion, tail jumping as he moves his hips, fucking into you expertly, determined to breed you as best as he's able.
Anything to satisfy his owner and his own rut.
"Little doggy," Aizawa sighs as he strokes himself, "like a bitch in heat."
Even with the sleeve, Shinsou can feel you clenching at the words, "you want his kitties?"
You're drooling as you lift your head to look at your Papa; your eyes are glazed over, unfocused, and you jaw is slack, chin soaked with your drool. Aizawa pets your ears and answers before you've even opened your mouth, "better take him well then."
It hurts.
"It's so much," you groan, saliva coming out in waves, pillow underneath you drenched.
It's not in a wrong way, but it's aching. With your cunt already forcefully stretched by Papa's fat dick earlier, the added texture of this sleeve has you curling your toes and clenching your eyes shut to hold back tears. Aizawa coos at you and pets you softly, sweet and careful, while your brother is fucking you with a force you don't think you've tried before.
You have no idea how long this goes on for. Aizawa's dirty talk about breeding has your tongue lolling out, pussy trying to suck in your brother permanently.
"Closer, closer," Shinsou's whining, lost in the need to feel close with you. He leans down and wraps his arms around your throat, simultaneously choking you and arching your back. He whines into your ear while he forces himself in and out, in and out, in and out.
Your father jerks his own cock harder, eyes locked to the way Shinsou's face is scrunched up in pure bliss and pleasure.
"C'mon, Hitoshi," he grunts, "fuck her harder."
Shinsou licks at your cheeks, "feels g-good, feels so good, good puppy, good pup," he's blabbering now, clumsy thrusts never ending, eyes rolled to the back of his head.
He thinks he might've cum several times if not for the sleeve. With another clumsy thrust, he ends up dragging himself against your folds instead of your hole, howling at the loss of your heat, humping you desperately to try and get back inside.
Nothing works, so he bites at your cheek with a pained roar, unable to think clearly. You kick your legs at the pain, crying out.
Aizawa ends up feeling bad for his kitty, admittedly more in heat than you are, so he coos and crawls over to help Shinsou back inside your pussy – but not before removing the sleeve, eating up the way Shinsou's entire body shudders.
Your father reaches for your brother's balls, massaging them. He pulls at them once, twice.
"C'mon then," he spanks Shinsou, "fill her up good."
It seems his son is completely lost in the headspace, whining and moaning when he feels your walls around him again. He kisses and licks and moans onto your face, adding wetness to your already soaked skin, tongue apologizing to the bite mark on your cheek.
It doesn't take long now that the repressor is off. He barely pulls out halfway before he fucks himself inside of you harshly again and again, terrified of falling back out and desperate for his cum to reach as far as possible inside your puppy parts, for a whole litter to be made with his milk.
"Shi-shit, oh—hmppfh… hnng, c-close, so close—"
Shinsou's shouting now. He's unsure what he's saying, if it's even coherent, lost in the way your perfect walls cuddle him, hugging him like they're meant to. He feels like his head is inside of a glass bowl, disconnected from everything and everyone else. It's the bell's rhythm that gives him a sense of time.
"Hmpppfhg, mmhmmmm," he bites onto your shoulder to try and quiet himself, but he's just as noisy, drool dripping down your collarbone.
With a full-body tremor and his teeth dug impossibly deeper into your shoulder, metallic taste in his mouth, his cock spasms and twitches. Your walls are milking him, tightening up at the first drop, sucking him further and further inside of you.
Like he's meant to breed you.
He ruts into you while whining now, humping your abused hole with his dick nestled deep inside. You're shaking underneath him, completely limp and used.
Barely a moment passes after he manages to release your skin, licking apologetically at the bleeding wound that he created before Aizawa grunts and decides that it's his turn to give the kitty some love now.
Shinsou cries out and reaches behind him to stop his father, unceremoniously letting go of your upper body in the process. You drop to the bed, and he falls with you when his father now mounts him.
"Oh Go—hnng, oh fuck!"
Aizawa forces himself in to the hilt before he even entertains Shinsou's attempts at pushing him off. He leans down, mouth against Shinsou's ear before he talks, low and deep, "don't pull out of her; want to make sure it takes."
Pathetically, Shinsou spits out another spurt of cum at the command, eyes rolling to the back of his head.
It's ruthless, the pace that Aizawa starts. He fucks him in long, secure strokes, making sure that he feels every. Single. Inch.
"Such a good kitty for me, bred my puppy so well," Aizawa grits his teeth as he looks over his son's back. His skin is flushed and his hair is mussed, lace messed up and tail curled around his thigh, but he's beautiful.
"Fuck—mhm, Papa—aaah!"
A big palm presses down between his shoulder blades, "fuck, you're tightening up," he comments, "you wanna to be bred as well?"
Shinsou digs his face into your hair, embarrassed by how fucked out he sounds. It's like a cat howling and screeching. His dick is softening inside of you but Aizawa makes sure to only push him towards you, not pull you too far away.
"Look at the clock," a big hand grabs the hairs at his scalp and lifts it, moves it to look in the direction of the clock, "almost midnight. Want my cum before or after your birthday begins?"
What is he supposed to answer?
"You can either begin your day with my cum already seeping out, or it can be the first birthday present you get."
Fuck.
His father is rough with him, fucking him like he owns him. He shudders thinking that he probably does, eyes blinking profusely to keep the tears away. Shinsou shakes his head.
"Too much," he moans, voice high-pitched and shrill, a squeaking sound compared to the normal lilt of his voice, "Papa, it's too much."
Shit, he really didn't really imagine himself crying his way into his own birthday.
But his dick is on fire, surrounded by your wetness still, your velvety soft walls still trying to milk him as his prostate is constantly abused by the fat cock forcing itself in and out of his sensitive hole, squelch loud and embarrassing.
He gives escape one last attempt, arms flailing as he tries to make them push at his Papa, to get him away. He needs to move away. Now.
Aizawa simply pushes them away like they weighed nothing, barely using any force, "oh no you don't."
Shinsou's leaking before he can stop himself. It's everywhere. He's full-on wailing now, eyes unable to see for the tears misting his vision, snot trailing down over his upper lip, mixing with his sticky drool. Dick is leaking urine inside his precious little baby sister because he failed to pull away.
You whine at the feeling, and that's when Aizawa realizes what's happening.
He laughs, breathless, "oh," Shinsou tightens around him, humiliation heating him up even before his father finishes speaking, "so both of my pets need strict potty training, hm?"
Your big brother's shaking his head, hands going to wipe away his own tears in an attempt to stop them from coming.
Aizawa leans down, puts all his weight onto both of his children and coos, "'s okay," he whispers, helping Shinsou wipe at the tears, "new environments can stress out any animal, yeah? There's no shame, 's okay, sshhhh, take it easy, easy there."
His words aren't a big support when he keeps fucking him through it, overstimulating him further despite trying to make it seem like he's helping with his gentle parenting.
Shinsou flinches when your soft, small hands suddenly reach behind you and out for him, tapping at his hips, "Onii-san," you whine, voice hoarse, "love you, happy birthday, happy birthday, love you, Onii-san."
"Ah," Aizawa chuckles, intertwining his fingers with his daughter's against his son's skin, "seems someone was keeping better track of the time than we were."
Turning his head to the clock, Shinsou's surprised to see that you spoke at precisely midnight; he thought you were out cold at this point.
Sniffling, he hides in your nape before he lets out another full-blown sob. Everything feels so good, so right.
It's definitely too much.
Aizawa starts moaning, and Shinsou can feel how close he is; he tries to tighten and clench up, to make his father feel good. Aizawa coos at him, and kisses at the top of his spine, "good boy, my good boy…" he fucks into him faster, "perfect little pet too, without any training, hm? Just a natural for me."
This is the praise he's used to hearing Aizawa utter to you; not him. He whines and curls in on himself, arms circling around you as if you're a teddy bear there to comfort him.
"Fuck," Aizawa kisses at the top of his head, "happy birthday my beautiful little boy."
And then he cums.
There's not much energy left in Shinsou, legs cramping and face scrunching up, but he tightens his grip around you and tries to tighten around Papa as well.
Aizawa won't stop cumming, cursing and groaning above him. It sounds so attractive that Shinsou's cock pathetically twitches and jumps in interest.
Your father groans as he wraps his arms around Shinsou's armpits and pulls him back onto his lap, completely sheathing him on his fat length.
"C'mon, tighten up."
He whines and kicks with his legs, leaning back against his father. Aizawa then circles his nipples before he starts pulling at the chains, eating the warbled cry with a laugh, "these are cute, pretty boy."
Shinsou can feel Aizawa softening inside of him, milk leaking out of him and onto Aizawa. His father kisses his nape gently as he rests his forehead there, "happy birthday… fuck…"
He lazily fucks up against him, sighing and panting at the overstimulation, until his cock slips out. Aizawa hugs his son close against him, Shinsou's sweat wetting his shirt, "'love you."
Shinsou can barely breathe at the soft, gentle demeanor. Cautiously, he reaches for his father's hand to intertwine their fingers, "…love you too."
His father grunts and kisses at his shoulder, "c'mon, lemme clean both of you up."
Neither of the children are entirely sure how Aizawa has the energy to take care of them both so gently, filling up the bathtub while taking off their small decorations. As he pulls down Shinsou's panties, you sit on the bath stool, head leaned against his thigh.
Giving you both quick showers first to rinse you off so that you're not completely dirty, he lowers Shinsou gently into the bathwater, dragging a cloth over him.
"Here you go," he grunts, helping you down onto your brother's arms. Both men help clean you up, massaging your limbs and cooing at you.
"I'm gonna throw your sheets in the wash, can you entertain yourselves a little bit?"
Aizawa isn't surprised when he comes back to you asleep on your brother's chest, Shinsou holding your face up above water.
Softly, he pats Shinsou's head, massages his scalp, "she's really excited for the party on Sunday."
Shinsou kisses your head, "I bet."
"She invited everyone herself."
A look of surprise morphs on Shinsou's features. Aizawa snorts, "well, all except one… She says he seems too intimidating, so I called him."
"Who?" He raises a brow at his father's amusement. His father looks to him with an amused smirk as he pets your head instead.
"Monoma."
"Neito is coming?"
Aizawa snorts again, "he was pretty pissed about not having been introduced to your precious little sister after so long so he insisted on coming."
"Insisted? But you invited him."
"You know how he is."
Shinsou laughs too, playing with your hair as he mulls over the party. He hasn't hosted a birthday party in years. He didn't hold them as a kid. And while it was impossible to escape one living at the U.A dorms during his second and third year, he's successfully dodged any big celebration ever since.
You snore lightly before you nuzzle closer to your brother, greedily demanding that he holds you closer. It's amazing how you can sleep most places now so long as your brother or father is around. Both men coo at you when you mumble out a warbled love you in your sleep.
"So… How did you get these?" Aizawa reaches over to flick Shinsou's nipple. You perk up slightly to show you want to know too. Your brother sighs and hides in your hair, "Uncle 'Zashi gifted them to me."
"When?"
"Two weeks ago."
Aizawa grimaces after doing the math, "they don't heal that fast."
Shinsou snorts, lifting his head again with a big smile, "I learned."
"Then…?"
Purple eyes stare directly into Aizawa's, filled with mirth and mischief, "I visited the school that day. Don't you remember?"
Aizawa flies up from the bath stool he's sat on, "you cannot be serious!" before he coughs and sits back down, trying to gather himself, "her services are for students."
Shinsou snorts, "she said the same thing whe—hmppfg," Aizawa interrupts him with a kiss, unwilling to hear anymore of this preposterous nonsense. He pulls away, smiles at how zonked out Shinsou looks from a simple kiss.
"Hizashi said he'll pick her up at 11."
"Mhm," Shinsou hums, "'asked him to. Wanted to eat breakfast together." He gives his father a look, "wanna join?"
Aizawa thinks it over, looking at the tiles in the bathroom. He doesn't have classes until after lunch, but he had planned to go over the student plans with Vlad.
He shrugs, "yeah, sure."
Shinsou almost doesn't believe it. He'd mostly asked as a joke, knowing how rigid his father is with work and taking time off. His voice sounds unsure, shaky when he asks.
"Really?"
Aizawa smirks at him, "yeah. When my pretty little boy asks so nicely, who can decline?"
Shinsou looks down at the praise, licking his lips. He makes small waves in the water with his free hand, alleviating his excited heartbeat.
"I want waffles then."