Izumi Ibuki-Midoriya was Quirkless, the only one of her large and wonderful family that was soo.

And that had rather shocked her when she had been diagnosed as such as her twin sister Yamato had obviously inherited a variant of the [Oni] Quirk that had seemingly bred true for generations and had so in all her half-sisters. Hadn't even inherited a psychic-type quirk from her mother's side of the family, all of which were strong going by how Aunty Tatsumaki was the Number One S-Rank Hero in Japan. Aunty Fubuki was one of the most successful B-Rank Heroes, and while she didn't do Pro-Heroing, her mother, Inko, wasn't any less deadly than her siblings. Maybe even more so, as unlike her sisters, Inko's Quirk was focused on Micro Telekinesis, which allowed her to use it inside of her person's body.

Very deadly.

She was getting off track.

While at first being Quirkless had hurt her, and she had been bullied for it, now, though? It didn't bother Izumi because, in her opinion, that had allowed her to get something that none of her siblings had.

As the world they all lived in was a fantastical place where there existed powers outside of what was provided by the Metagene, which most humans were born with. There were still those who relied on tech, magic users, and those born between humans and aliens. Or even Supernatural Martial Arts.

The last one was what she had pursued as Izumi had no talent for Magic, and her father knew a special martial arts style called Hamon, which he had taught her and proved to have a talent for.

And speaking of her father, Izumi loved him.

It had at first just been familial love; she loved her father like she loved her mom, aunts, Grandmother, and sisters.

But as she grew up and entered puberty, her love for her father, for her Daddy.

Changed.

It went from familial love to romantic lust; she desired her Daddy, just like all her sisters did. For how could they not? Takeru was a perfect daddy to them all, the perfect man; no other would make them feel the way he did.

And best of all?

He reciprocated that love then they had all confessed to him after they had been caught masturbating to him railing their Grandmother's ass, showing that he had no problem with incest.

But had said he would only fuck them if they managed to get into the high school of their choice.

So Izumi had begun training even harder, both her martial arts and her body, practicing with dildos and her sisters so they wouldn't suck at sexually satisfying their father; when the time came. And Izumi was also rather happy that, over the next two years, her body had bloomed out.

Her tits growing fat and heavy, just how Daddy liked them.

But almost a year ago, things had changed for Izumi, as she and her best friend Akatsuki Bakugo nicknamed Aka-chan(While she was Deku, as Aka-chan thought they were similar, a small thing that could grow into a mighty tree. Like in that old video game), a blond girl with a [Explosive] Quirk, who might also be her half-sister, as she knew that she and Yamato, had been conceived during a threesome with Akatsuki's mother Mitsuki and Izumi's mom.

But that had never been really confirmed, but their families were good friends to this day, so Izumi guessed it didn't matter.

But one day, when they were walking home from school, they got attacked by a slime villain who tried to rape them and use their bodies as a shield as he was being chased by a Hero.

That Hero was Gal Might, the protege of the Legendary All Might(Izumi's second favorite hero; number 1 was her Daddy, obviously) who had saved the world from a terrible villain called All for One at the cost of his own life, though not before on public Television giving his Quirk to his Sidekick Gal Might so she might continue his legacy.

That had been seven years ago, at that point in time, now it was eight.

But during that incident Izumi had awakened something.

A power that she had gotten from her Daddy that none of her sisters had inherited.

The power that allowed him to manipulate water as he did.

[Stand Power]

And that was when she had awakened [You Say Run] a mighty colossus that looked like a mechanical All Might, who had punched the Slime Villain at just the right spot with just enough force to beat them.

And that was her Stand's power. To give her just enough strength to beat any given opponent, of course, it was also naturally strong even without fighting, a person, like bend steel beams and lift cars strong.

After that, Izumi's life had become even more fantastical as Gal Might, thanks to the demonstration of her Stand(Which she could somehow see even if Akatsuki and the rest of her family except for Daddy couldn't), had decided to take her on as her apprentice to teach her how to handle the superstrength of her Stand.

And so Izumi would end up knowing Gal Might as Nana-Sensei and got to know her as a person. And she learned that she was kinda a lonely person, not having that many friends despite being the Number 3 S-Rank Hero in Japan.

But Izumi knew a thing that made people happy.

Getting fucked by Daddy, she hadn't gotten to experience it yet, but she knew going by the noises her mother, aunts, Half-sister aunts, and Grandmother made getting fucked by him made you very happy.

So Izumi's plan was to get Nana-sensei to fall for her Daddy and have him fuck her happy; she hoped she was having success. But she liked to think she was, as she was at least coming over for dinner once a week now.

Yes, Izumi really loved her Daddy, and he was happy when she showed off [You Say Run] to him. Happy that one of his children had inherited the ability to manifest a Stand.

And she hoped he would fuck her soon as after having recovered from the Flu they had all caught, she had started to get really horny, so much so that Yamato using her huge fingers in her pussy was not enough to satisfy her, unlike normal.

So she was going commando downstairs to avoid staining any more panties with her pussy juice.

"Everyone get downstairs; mail from UA has arrived," Izumi heard Aunty Tatsumaki say, and immediately, the living room was filled with the entire Ibuki-Midoriya family, an actual rarity for them as all the adults were busy people. With the newest member of the household, Mugako, sitting next to Izumi. And she was a very nice girl who definitely made for a great extra sister. But it definitely showed that Daddy was such a horn dog; if he didn't have more children out in the world, there would be soon, as she wanted to mate with him so badly.

"Everyone ready?" Daddy asked, and man, she was getting really hot bothered by his voice, more so than usual. And were her siblings also more horny looking than usual.

But she answered. "We are Daddy." And so did the rest of them.

And so the holographic message was played.

"Hello, people of the Ibuki-Midoriya Household!" The form of a small animal appeared before them all, one that Izumi had seen a few times. "Am I a Mouse, a Bear, a Cat? Who knows, but one thing is for certain, I am Principal Nedzu of UA."

"It was one of the teachers for ours," Aunty Shuten said.

"Must be because so many from our household got in, and Daddy is a teacher," Aunty Ibaraki said.

"First of all, congratulations for being the first household to get the most students in at UA's door at the same time, so Izumi, Ushiwakamaru, Raikou, Chiyome, Mukago, Nezuko, Yamato, Himiko. (So many children) all you have made it into UA, Welcome to your Hero Academia." A list of the rankings was quickly displayed, highlighting their names and showing that Raikou got first place with Aka-chan right down below her. Though funnily enough, she could see that a few in the top twenty, which were the only ones that were shown as they had all made it into that, shared a number as they had gotten the same amount of Villain and Hero Points.

Izumi actually shared the seventh position with her twin.

"And I assume you will be happy to know you will all be in the same Class of 1-B with your father as the Homeroom Teacher."

Yes, they were all very much happy about that were the thoughts of the children; all the while, Izumi could hear Daddy sigh at that before popping open a soda can and starting to drink it.

"Speaking of your father, Takeru, I am just going to assume you are present for this. As this year is going to be a little bit different regarding your class, as it shall be UA's very first all-girls class!"

"Pfft!" Daddy spat his drink. "Why? If there is an all-girls class, shouldn't that go to Nenuri?"

"You might be asking why you got an all-girls class and not Nemuri-san?" Principal Nedzu said, seemingly having predicted Daddy's thoughts. "It's simple, really; it's due to the Flu Virus that was spread around by that scientist; we found out a few days ago what it hid. A retrovirus that only had an effect on women who got infected. Namely making them very fertile, shortening pregnancy down to two to three months, and making them go into heat. And so, to take advantage of it and combat the low birthrate, you, due to your many progeny, have been designated as a Breeder and have been given the right to breed any woman in the country, with a focus on the female students in your class. Have fun, your horndog, though I think the women in your household won't mind; happy babymaking; an official announcement will happen later today, sent the document to your e-mail, and your breeder license you be in your mail. Also please send costume designs before the week is over."

With that, the Hologram disappeared.

"He can't be serious," Dadddy said. But Izumi could barely focus now; her pussy was burning with need, she was so hot inside, and her womb was throbbing with desire for cock.

For Daddy's cock.

Izumi wanted to breed.

"I don't think he is dear," Mama said. "Takeru Yamato Ibuki-Douji, here is your official Breeder Licence; we thank your service in securing the future of our nation, so please go forth and seed the heroes of our country."

"Why are you complaining? You were planning to fuck and impregnate your children already."

"I know, but that should be their choice, not something the government should force on them, and goes for the other students."

"Like they aren't going to fall in love with Daddy in less than a month," Nezuko said. "So, can we get to breeding, Daddy?"

"I think Izumi is up first, daughter of mine, cause it looks like she has gone into heat going by how she is just masturbating without a care then she usually doesn't do that."

She was masturbating?

Izumi looked down at herself and saw that her right hand was between her legs, and her fingers were plunging in and out of her gushing cunt, a small puddle of pussy juice was now accumulating.

"Wow, she is acting like a bitch in heat," Himiko said.

"Language."

"Sorry, Daddy, but it's true, I wanna feel that too, hey, body go into heat."

"You will have your time, Himiko now, everyone, let's leave Izumi and your father to it; they going to be using the living room for the next few hours," Grandmother said, and all obeyed.

And soon enough, it was just her and Daddy.

Izumi crawled towards her father and pressed her head against his crotch, where she could feel the object of her desire, the cock that she had been craving for almost five years now. The become that would become the dick that fueled her fantasies the most.

And she took in a deep breath, absorbing the cock musk through his pants as her Daddy, who was shorter than her, patted her head, and Izumi hummed in response; she loved it when Daddy patted her head. It made her feel like a dog, a bitch whose only purpose was to fuck and get bred by him.

He was a true short king.

The perfect embodiment of a giant dicked shota.

A fetish that everyone in the household shared, for how could they not?

"You really want it, don't you, Izumi?" Daddy asked a stupid question.

"Yes, I really want your cock Daddy; my body wants to mate with you; you are the most compatible male with me, Daddy, I have run the numbers, and the odds that I will find a boyfriend that matches you is one out of five billion." The green-haired girl stated as she found the zipper, lifting it with her nose. "And if we were to have children, there is a high chance they will be Quirkless but gain the ability to become a Stand User, as outside of yourself, Daddy, there might be a compatibility issue. I am willing to offer my body to test such a theory."

"You are such a smart girl Izumi; no wonder you are the only one who keeps getting report cards higher than Raikou."

Izumi pruned at the praise as she, with a quick maneuver, gripped the zipper with her teeth and pulled it down to make Daddy's pants looser.

Freeing the thing she sought in said pants and-

Shlock!

That was the sound of flesh smacking against flesh as Daddy's cock smacked against her cheek as it sprung to full erectness and now laid across her face.

And it had transformed into the type of dick that turned Izumi Ibuki-Midoriya on the most.

It was a pillar of throbbing canine meat, a red jet of doggy cock laid against her face, the foot-long cock(She had measured with the dildos that she had trained with that twelve inches was the maximum cock length that Izumi could take before it went from pleasure due to pain, as unlike her sisters with their enhanced durability, that was how far she could stretch and was stretchable. She had seen Nezuko pull a thirty-inch horsecock dildo out of her ass one time.) smelled like heaven

And at the bottom of it was the knot that swelled out to twice the girth of the rest of the member.

Izumi couldn't wait for it to lock her pussy.

"So this the kind of cock that my Izumi likes, how did that occur?" Daddy asked, and she answered truthfully.

"It was a few years ago, I was trying to research porn, and I saw a video of a woman fucking herself on a dildo one; then I got even more curious as she looked so happy with it knotting her, then I looked up some beastiality to see if the reality matched, and so I kept thinking of daddy taking the doggy's place and fucking me like that," Izumi fully explained her journey her heat not impairing her mind to recall information, well just as long as it was related to Daddy and sex.

"Interesting, so you want me to fuck you doggy style?" Daddy asked as Izumi gave the veiny dog cock a few licks, and she felt her body have a micro orgasm at the taste.

"Yes."

"Then you better present yourself like a proper bitch then, Izumi, if you want me to do that," Daddy said, and her pussy gushed at his words as she obeyed him happily.

So Izumi got on all fours and wagged her ass at her Daddy enticing him to her holes, especially a drolling pussy hole that was winking as it was now widening due to the circulation of blood in her nether region.

"What a pretty pussy you have, Izumi; you are definitely a product of your mother's body, especially with this fat ass and those killer tits; I want those wrapped around my cock while you give me a blowjob afterward," Daddy said.

And Izumi happily nodded at his words. "Of course, Daddy."

Oh, how she loved how he treated her like an actual dog.

"But first, we need to fix this bitch in heat by putting a few puppies in her womb," Daddy said as he aligned his canine cock with her engorged pussy.

Izumi could feel the pointy cock poking at her lips, the head slowly spreading her flower as Daddy slowly inserted himself into her.

It was an agonizing process for Izumi as Daddy constantly teased her by putting in a little bit of thick doggy cock before pulling out and putting more in.

But eventually, Izumi felt more and more cock go up her pussy tunnel until, eventually, she felt her Daddy reach her cervix.

Which meant that there were now four inches remaining outside of her pussy, which fit with the dildos she had trained with.

And so, as she felt it press against the entrance to her womb, Izumi, with immense muscle practice as she, couldn't cheat with minor shapeshifting like most of her sisters could. Izumi opened up the door, and Daddy's cock was let into her baby-making chamber where several of her eggs had already been deposited into it thanks to stimulating her ovaries with hamon as Izumi wanted an entire litter of puppies, for while she wasn't as tough or strong as her sisters, she was still stronger than a normal person thanks to the constantly Hamon practice her body being sculpted like a Greek statue with how many muscles she had.

Maybe she could get an Amazon to rate her workout and body-"Ah!" Izumi moaned as she felt the knot go past her pussy lips as she felt Daddy give a final thrust and like how dogs mated. And so Izumi's intellectual brain knew this was it.

There was no going back now; her pussy had a solid grip on the base of Daddy's cock right behind the knot, so he could not leave her pussy until he had finished orgasming.

Finished painting her womb with seed. A process that would take several minutes if Daddy cock acted like a dog's in that regard.

"Here it comes, Izumi; get ready to be pumped full of my cum, get pregnant with your daddy's babies, and give girth to your own siblings," Daddy said as Izumi felt cum starting to be pumped into her womb, the liquid felt warm inside of her womb.

"Yes, I can feel it. I wanna give birth to so many babies. Daddy, so many babies over and over against, people going to call me Breeding Bitch Hero," Izumi giggled as her mind was high of pleasure as she felt her belly swelling and swelling; her tits also felt hot as Daddy was laying on her back as he was now full on mounting her now like a proper dog, his hands groping and playing with her tits.

"They are going to call your entire class that, Class 1-B? More like Class 1 Breeding Bitches," Daddy dirty talked.

"Yes, we are all your breeding bitches; I met a girl that was really cute; she had Quirk that allowed her to manipulate gravity on an object she touched, which she combined with a magic spell to then send them flying at fast speeds, her fingers have paw prints on them."

"Oh, interesting."

"Yeah, and she also had a nice pair of boobs; she is going to look even prettier with your babies in her belly, breasts filled with milk you can suck. I want my breasts filled with milk, so you better grow quickly my babies, so that your Daddy can snack on my milk." Izumi moaned as her mind fully unraveled as she started to devolve into just sounds of moaning and panting as more and more cum filled her womb up until thirty minutes had passed and Daddy's knot had shrunk enough for him to pull out of her womb and pussy tunnel.

Which resulted in a flood of semen spilling out of her pussy, but she Izumi didn't care; she just snuggled up to her Daddy. For Izumi was spent and she was oh so tired. Having sex was more exhaustive than what she had expected it to be, and she didn't even get to give her Daddy a titjob like she had promised him.

"Sleep well, my little green princess," Daddy said as she fell asleep in his arms, hand on her stomach as she couldn't wait to see what her belly would look like.

Though Izumi got that wish faster than she thought as, when she woke up, she was way hungrier that usual and carried way more weight than she was used to.

And she quickly found the source of said weight as she looked down at her stomach, which looked like she was about to give birth to a baby already, or was already four months along with several babies, and her breasts looked like they had also swelled a cup size, as from her now dark nipples leaked what was clearly milk.

"…I can't believe I said that," Izumi said in embarrassment as she clearly remembered how she had talked while under the influence of her heat.

"Morning Izumi dear, are you," Her mother said as she entered her room but then stopped as she stared at her daughter's clearly pregnant belly. "Well, we should go and get an ultrasound, shouldn't we?"

"Probably," Izumi replied as she placed a hand on her belly, which bore the fruit of her and her father's copulation, and she couldn't be any happier.

Xxx

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