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In My Hero Academia, it all began with a single child who literally shone brighter than the sun. Not long after that, reports of people with superpowers began to be confirmed worldwide, and before long, these superpowers became known as quirks, which 80% of the population had.
These quirks became the rise of a new age, but with that, there was also an increase in criminal activity. But while some abused their powers, others used them for good to protect their cities and stop crime, and even made it a professional, high-paying career. And so, like something from a comic book, those who used their powers for good were deemed Pro Heroes, while those who used their powers for evil became villains.
However, to become a licensed pro hero, one would have to complete a hero course and an education and training program focused on heroism, which was included in a student's high school education. Countless schools offer hero courses from all over the world, but among them, there's one that stands above the rest, one where every student dreams of attending to become a hero.
That school is U.A. High.
This school is one of the top schools in Japan for the best hero course, and countless students from all over the country attend in the hopes of someday becoming heroes and fulfilling their own goals and dreams.
But among all the others, this story is about a female student who once attended this school. Her name is Momo Yaoyorozu.
She was a female born into a wealthy family with a powerful quirk known as Creation, which grants her the ability to create any non-living object from skin by transforming the molecular structure of her fat cells, so long as she knows what it's made of. She also has a keen intellect, can wield dual weapons, and excels at close combat and support. Similar to her peers in Class 1-A at U.A, she had dreams of becoming a great hero and soon achieved that goal, becoming the pro-hero known as Everything Hero: Creati.
Life was good for Momo, and things have never been better. However, there would come a day when Momo would do something she never thought she would do. And it would involve something that not even she herself could resist, despite being refined, and most notably, because of her quirk.
In a large bookstore's cafe, a book club was in session, with a group of women, all of whom were either chatting with one another or buried in their books. Among them was Momo Yayorozu, who was snacking on some of the refreshments.
She had her black hair tied in its usual ponytail, wearing a pale yellow button-down unbuttoned to show a bit of cleavage, gray pants, and black pumps.
She also had a book open, but unlike the others, she didn't seem too interested in reading it. If anything, she was more restless and bored.
Then, she heard a voice as someone approached her, their shadow casting over her.
"What's up, Momo? You seem to be distracted."
Momo looked up, only to see a long-time acquaintance and friend of hers.
They were very tall, mocha-skinned, with green eyes, long, waist-length brown hair, pointed ears, and a yellow tattoo on the left cheek, and a thin scar that ran from their forehead, in between their eyes, before stopping on the left side of their nose. As far as their physical appearance, they were a centaur. For their upper human half, they had enormous breasts the size of pumpkins, barely containable in a black top, and also wore fingerless gloves. Beneath a black skirt, their lower horse-like body was dark brown, with a long, glossy tail that reached all the way to their hooves, almost touching the floor.
"Oh, it's you, Kael," said Momo. "Sorry. I suppose you could say that I am a bit distracted."
Kael then took their seat in front of Momo and sat on the floor. "Well, you aren't reading the book that the book club picked out, and you seem to be eating more than you're usually do," they said. "One would think that you're either having boy troubles and are eating away your troubles, or you're likely getting ready for something which requires your quirk."
Momo wryly chuckled as she sipped from a cup of tea. "You're just as blunt as ever, it seems, and just like a book, you're good at reading people."
"So, what's going on?" asked Kael. "You want to talk about it, or is it one of those private things better left unsaid?"
"Well, it's not like it's anything to be concerned about," Momo replied. "It's more like I'm not so sure about something that's going on."
"That's basically what being concerned is," said Kael. "Why don't you just tell me what it is? Maybe I can help you."
Momo paused as she glanced around before returning her gaze to Kael as she spoke low enough for only them to hear.
"A group of heroes has recently planned a huge sting operation to take down a group of villains," she explained. "I, myself, am a key part of this plan, mostly because of my quirk."
Kael raised a brow. "Hardly sounds like anything to be concerned about," they said. "Don't tell me you're afraid. It would be unbecoming of you, especially since you're one of the many heroes who went up against the League of Villains and lived to tell the tale."
"No, it's not like that!" Momo interjected with a frown. "It has to do with my role in the plan. As you would expect, they want me to use my quirk to make some supplies to help. But one of those things might be a bit impossible to create." She paused for a brief moment before looking up at Kael. "For the operation to work, they expect me to make an armored stryker."
"An armored stryker?" Kael repeated. "Why something like that? Couldn't they just get one from the police department or something?"
"Well, you'd be correct, but the plan is to sneak close enough to the warehouse undetected and then catch them by surprise with a surprise attack," said Momo. "Then, we strike hard and quick with an all-out assault. To do so, I have to make the stryker, so we have the element of surprise. But the problem I'm having is making the stryker needed for the operation, mostly because I've never been able to make something so large before."
"Does it require a lot of calories?" asked Kael.
"Indeed," nodded Momo as she rested her chin on her hand. "So I've been consuming as much food as I could the past few days, but it hasn't been enough. Even with eating cakes and other things, I always end up being forced to use the energy I've stored up with my quirk since I've been busy with hero work, and the operation begins tonight, and I'm not sure if I'll be able to have enough in time."
Kael hummed thoughtfully. "Well, if it's calories you're looking for, then maybe I can help you with that," they offered. "Why don't you just drink a whole bunch of milk for your calories?"
Momo looked up at the centaur. "Wait, why milk specifically?" she wondered. "I know that it's nutritious in value, but…"
"Think about it. It's got lots of calories, protein, and even some fats and sugar," cut in Kael. "And I bet if you consume a lot of it, you'll have more than enough calories to store in your body for the operation."
"Well, you do bring up a good point," pondered Momo. "But it's not like I can just order a bunch of milk in this store all at once. I don't want to drink the staff dry, and I'm sure it'll be pretty expensive."
"No need to worry about that," said Kael. "I know where you can not only get plenty of milk, but it's also free of charge."
Momo was surprised. "Wait, you do?" she asked. "Where exactly?"
Kael then moved their hands underneath their massive breasts and held them up, presenting them to Momo. "From here, of course," they said.
Momo glanced at their mammaries before giving them a deadpanned look. "You can't be serious, Kael?" she said flatly. "Your suggestion is for you to breastfeed me?"
"Naturally," answered Kael. "It's not any different than drinking milk from the supermarket. Only you're getting it straight from the source, and what better way to get milk than to get it straight from me?"
"Kael, with all due respect, and I appreciate the offer, but you're not even pregnant," Momo pointed out. "So I doubt anything is going to come out of your breasts."
Kael smirked smugly. "Sorry to disappoint you, but that's where you're wrong," they said. "You forget, I'm a heteromorph. Due to my body, my hormones tend to become imbalanced. Because they do, my breasts end up lactating a lot. It's also part of the reason why they're so enormous."
And just to prove it, they bounced their heavy breasts in their hands, making them wobble heavily like water balloons. They then switched to shaking them, making them jiggle as they sloshed audibly.
Momo couldn't help but grow a bit pink as she stared at them. "So you say," she said as she looked back.
"And what's more, my girls have been a bit backed up lately and could use a good milking," added Kael. "I think we could both benefit from this. You help me let out some milk, and I provide you with fat and calories for your little operation. It's a win-win."
"You do make an interesting proposition," Momo said while thinking it over. "And I do feel a little thirsty after eating all those snacks, so why not? I'd say let's do it."
"Great," Kael smiled. "These things have been quite heavy, and they're killing my back."
Momo then got up. "Then, should we relocate to somewhere more private then?" she asked. "We can go to my place, so we can have a bit more privacy."
"Nah, we can do it right here," said Kael. "I've been on my feet all day, and I don't think I feel like taking another step."
Momo blinked at them, taken aback, while Kael gave her a look.
"What? Did you think I'd be embarrassed to let someone suck on my breasts in public like this?" Kael teased. "I couldn't care less if I get stared at. And I highly doubt you'd be the kind to get self-conscious, considering all the skimpy stuff you wear all the time."
"Don't be ridiculous," Momo huffed. "I was just concerned about you, that's all, so no need to get snippy. I don't mind if people look at me at all. It's perfectly natural to show a little skin. But I'd be lying if I said I didn't have some concerns. For example, your clothes. Aren't you worried about staining them?"
"Eh, don't worry. It should be fine," soothed Kael. "My clothes are made with a special fabric that makes them stain-proof. And it's not like these are one-of-a-kind. I can always commission more or use stain remover. Better yet, I can always have you make me some after the operation is over."
Momo sweatdrop as she flatly stared. "Always the opportunistic one I see," she said pointedly. "Well, since you're offering, I'll have to take you up on that."
"Great," smiled Kael. "But before we do anything else, let's sit over by the couch, so that we can have a bit more room."
Kael and Momo then left their table and went over to a large couch. It was an oversized model with soft, cushiony red leather upholstery. Kael sat down on it, making themselves comfy while Momo took a cushioned stool and sat in front of them.
Kael made to grab the hem of their top, but then hesitated. "You might want to scoot a little further back," they warned. "These things can be a little misleading."
"Misleading how?" asked Momo.
"You'll see," said Kael as she waved their hand. "Just trust me and move back a bit."
Momo did so, and when she was a good distance away, Kael took hold of the hem of their top and slowly started pulling it down. As they did, their cleavage wobbled and shook as their breasts slowly puffed and swelled up like marshmallows over a campfire, and soon reached their chin. Then, while one more tug from Kael, they suddenly exploded free, sharply expanding to triple their sizes and wobbling violently before coming to a rest.
Momo's eyes went wide in disbelief. "W-What in the world?!" she couldn't help but exclaim.
Kael's breasts were now as big as a pair of yoga balls, their areolas each as big and round as dinner plates, and their nipples were each covered by brown pasties.
"I warned you that I was a bit backed up," Kael said.
"A little?!" Momo spoke incredulously. "Your breasts are enormous! How on Earth have you been able to carry those all this time?! Or rather… how is it possible they're so big like this when they were smaller before?!"
"Remember how I told you about my clothes?" said Kael. "They're not just stain-proof. They also do a good job of compressing my breasts whenever they get super-sized like this. It's a bit constricting, but you get used to it after a while. Now, if you can just take off the pasties on my nipples, you can go ahead and start drinking."
Momo frowned, but she scooted over to Kael's right breast and took hold of the pastie with two fingers. "All right then. If you'll excuse me then…"
She gently began pulling the pastie, slowly peeling it off the soft, supple skin. As she did, Kael couldn't help but grunt as they felt the adhesive of it pull on their areola, feeling a slight twinge of pain but also some pleasure until Momo was finally able to get it off. Their nipple was a tiny little nub the size of a thumb, and as Momo looked at it, she could see it noticeably twitch a little.
Momo gently held the massive mammary steady in her hands, opened her mouth, latched onto the little nub with her lips, and started gently sucking. After the first few sucks, nothing came out, but right after the seventh or eighth, a thin trickle of milk leaked out before it squirted and overflowed into her mouth.
The milk tasted sugary-sweet and warm, and upon tasting it, she couldn't help but be amazed as she pulled back.
"K-Kael… your milk tastes absolutely delicious!" she critiqued in amazement. "I've never tasted anything like this before!"
"Well, don't waste time talking. Get to drinking," chuckled Kael. "You got an operation to prepare for, remember?"
Momo then took their nipple back into her mouth and started suckling, pursing her lips as she made some quiet slurping sounds as she drank down her milk. As she did, the flow of milk gradually grew stronger, and the squirts soon evolved into a river closed her eyes, reveling in the taste.
Kael sighed contentedly as they watched Momo drink, their cheeks growing rosier as they rested their hands on top of their tits. "Make sure not to bite," she warned. "And my nipples are quite sensitive, so don't go too crazy."
But all they could hear from Momo was the sounds of her swallowing and gulping their milk down while feeling her pull their nipple with her lips. The feeling of her pulling on it caused a slight prickle of pleasure to run through their entire breast, which made them slightly shiver and let out a quiet gasp as they held back the urge to moan.
Then, as Momo continued to drink, she began moving her hands all over their breasts, wrapping her arms around while letting her palms glide across the soft and supple tissue. She also hollowed out her cheeks as she tugged even harder on their nipple and sucking loudly before relaxing. In response to her actions, the nipple she was sucking perked up to attention, fully hardening inside of her mouth, almost filling it up entirely from its size.
Kael chewed on their lip as they looked down at Momo. "G-Geez. You're really going at it, aren't you?" they murmured. "And I don't know if you've done this before, but you're pretty good at this. But knowing you, you're probably doing this out of instinct or something."
Momo drank, and she drank, and she drank some more. And as she gorged herself with milk, it didn't take long for her belly to start filling up. However, she didn't stop. As a result, her flat, toned belly slowly began to swell like a water balloon. With every swallow, it grew and bulged outward, its contents sloshing and swishing as it stretched out her top until, eventually, some buttons popped off and her shirt burst open. A massive, round ball of white flesh representing her gut now hung out as it continued to swell. At the same time, Kael's breast slowly started to deflate.
"Oooh~. That feels very nice, Momo," sighed Kael. "I already feel my breast getting lighter. Just make sure you don't forget to get my left breast, too."
Momo finally pulled away with a wet smack of her lips, panting huskily as she waddled over to Kael's other breast. Then, without delay, she grabbed the pastie and, with a sharp yank, ripped it right off of Kael's left nipple, and as the centaur yelped in surprise and pain, she latched onto it with her lips and started hungrily slurping.
"G-Geez! You could have been a bit more gentle, Momo!" complained Kael. "That actually hurt!"
Momo didn't reply as she suckled and slurped while pulling on their nipple, noisily gulping down whatever milk spurted out from it. The more she sucked, the more milk spurted from it, and the more she drank it, the more thirsty she became as she was overcome with rapture, not even caring how much she drank or how she was acting. So much so that some of it started coming out of her mouth, trickling down her chin and on Kael's boob as it too started to shrink. In addition, her belly had swelled up enough for her to be confused as expecting, roughly the size of a woman in the final trimester of pregnancy.
But despite feeling as full as she was, a strange feeling began to overtake Momo's reason. A feeling of longing and hunger that grew stronger the more she drank. In addition, as Kael's nipple was in her mouth, she could taste the savory saltiness of their skin as she licked and wriggled her tongue all over their nipple.
"W-What is this feeling?" Momo wondered in her thoughts. "I feel full enough to burst, yet I can't help but drink. Not only that, but… for some reason, Kael's tastes so good… like their skin alone is complementing the milk and making it taste better. And it's starting to make me want more… More than just their milk, but rather… "
Momo then pulled away from the nipple and looked up at Kael. Her eyes were hazy and clouded, while her breathing was ragged.
"What's going on, Momo?" asked Kael. "You already full?"
Momo stared in silence, still panting as if she had just run a marathon. As she did, her stomach let out a loud gurgle as it rumbled. Just as it did, both of the pupils in Momo's eyes turned into hearts as a lewd smile curled her lips as she made an impulsive decision.
"I want all of them~!"
Kael tilted their head in confusion while also a bit put off by the look on Momo's face. But then, Momo started climbing up their large mammary until she was right on top of their breast and got close, her face only a couple of feet away from theirs.
"Hey! What's gotten into you?" demanded Kael. "If you're planning on kissing me or something, you'd better take me out to dinner first."
At that moment, Momo opened her mouth wide in front of their face, so wide that the centaur could see the back of her throat. It got wider and wider, so unnaturally wide that it was like a hippo's, her jaw unhinging and her cheeks and lips stretching as it towered over them.
Kael's look of confusion and annoyance was quickly replaced by shock and fear as their face paled. "W-Wait, Momo… how are you…!"
But those were the last words they were able to get out as Momo reared back and lunged forward like a snake, and stuffed their head into their maw all the way up to the upper half of their giant breasts. While paralyzed with incomprehension as her tongue licked their face, Kael immediately began to struggle, trying to pull Momo off, but her lips held on tight with an unnatural strength. Momo noisily slurped as her lips encroached their form even further, their human half soon completely down her throat, now a giant mass of flesh that writhed in agony as the flesh squeezed tightly as Momo swallowed.
Kael made to get up, beginning to panic, but Momo quickly grabbed the haunches of their front legs and squeezed with the same strength that made them buckle and collapse. Once she did, Momo quickly got to work on their horse half, her mouth continuing to descend on Kael's form as she worked her throat muscles to their fullest, swallowing with terrifying strength as she stuffed their front legs into her mouth. She proceeded to work her way along their saddle and barrel all the way up to their hindquarters and butt. And before long, she devoured both of their rear legs and was slurping up their tail like a long noodle, disappearing in one more final swallow.
Momo let out a breath as she shuddered, now resting on top of a large, deformed mass of white, which was now her engorged stomach. Her arms couldn't even wrap around it as she felt it groan and churn loudly as she felt Kael move and thrash inside of her, their muffled voice filled with surprise barely coming through her flesh.
At first, she felt very pleased with herself, happy that she had fulfilled the wish she had decided upon, before it dawned on her, sobering her up fast, and her face became ashen.
"W-What have I done?!" she exclaimed as she stared at her belly in horror. "D-Did I really just…?!"
She then looked up and saw that some of the cafe patrons were staring right at her. Some were just as pale and shaken with dread, while others were red in the face and blushing.
Momo could only sit there on top of her mountain of a stomach, breaking into a cold sweat, knowing full well that they had seen everything that had transpired.
Later that night, at an abandoned warehouse in the middle of the forest, as Momo had described, a group of heroes waited just outside, hiding among the shrubs and trees. The leader of the group, a young male hero, looked through his binoculars and skimmed through the area. He could see multiple villains busily at work, loading up some goods into various trucks.
"All right. They have no idea what's about to happen," the leader said. "Now is as good a time as any for us to strike while the iron's hot."
He then looked back towards his team, only to notice that a key component of his plan wasn't there.
"Damn it all. Where the hell is Creati?" he demanded in a murmur. "She should have been here by now!"
"She said that she would be running a bit late due to some complications," replied another male hero. "She wouldn't specify what those complications were, but she said that she'll join us as soon as she can."
"Running late?! You've got to be kidding!" the leader whispered harshly. "She does know that our entire attack rides on her, so why the hell is she having complications at such a crucial time?!"
"Calm down! I'm sure that she won't let us down," soothed a female. "Just give it a minute, and I'm sure that she'll-."
Then, another female cut in. "Hey, guys! You might want to take a look at this!"
The party looked back, and what they saw made all of their eyes pop out of their sockets. A large sphere of pure white flesh was slowly making its way towards them, rumbling and groaning as it loomed over the heroes. As the heroes stared up at it, a voice then came from behind it.
"I apologize if it's taken me so long, but I'm here now."
Sure enough, as the giant boulder of flesh got close enough, it was revealed to be none other than Momo and her gargantuan gut of a stomach. Momo was dressed in her hero costume, which consisted of a red leotard with her back exposed, two white utility belts, and white headphones. Her giant belly was also being carried by a hoverboard platform.
Needless to say, the leader was indignant. "C-Creati! What the heck is all this?! Why is your stomach so enormous?!"
"I can't really go into details right now, but I can say that I needed to store as much fat in my body as possible to fulfill my role in this plan," said Momo. "So I… had a big lunch, which is why I'm in my current state.
The party could only stare with blank expressions until the leader snapped out of his stupor.
"All right! Never mind that! You're here now, and that's all that matters!" he said. "Now quickly, the villains are getting ready to move out!"
"Right! I'll get started right away!" said Momo. "Just give me a minute! And everyone stand back."
She looked at her belly, touched its surface with both hands, and closed her eyes in deep concentration. At that moment, her giant stomach rumbled and groaned as it was enveloped in bright, colorful light. As it was, something big and metallic emerged from it, and while it did, Momo's stomach rapidly began to shrink as it pushed the object out.
Momo grimaced as she quickly grew tired from the weight, but she kept going, refusing to give in. "I knew this was going to be difficult, but I didn't think it would be this hard! But… I have to do this! Push it out, Momo! Just one more big push!"
She summoned her will and pushed with all of her strength while trying not to let out any noise. At that moment, the stryker finally popped out. It was a stryker, with eight large wheels, a giant gun in the back, and several missiles and other weapons bolted to it. In addition, Momo's stomach had fully shrunk back to its normal flat state.
The leader and his group were amazed as Momo, gasping for breath, smiled with pride and patted the hood of the stryker. "I trust that this is sufficient for the plan?" she asked. "I made sure to use a special metal to make it not only durable but also powerful."
The leader beamed. "Absolutely! Well done, Creati!" he congratulated. "This is more than sufficient!"
"Those villains won't know what hit them with this bad boy!" said another male.
Then, one of the females noticed something. On Momo's stomach was a strange tattoo depicting Kael's face. "Hey, what's with the tattoo?" she wondered. "I never pegged you to be the kind to get one."
Momo quickly hid it with her hand. "O-Oh! It's nothing! Just something I decided to do for myself! A-Anyway, shouldn't we be moving out? We can't let those villains get away!"
"She's right!" said the leader. "Everyone, get inside! I'll be riding shotgun! And as for you, Creati, you hang back here. You've done more than enough and deserve a good rest!"
"C-Copy that," replied Momo as she gave a thumbs up.
The leader of the heroes and the rest of the group then climbed aboard the stryker and rumbled away, leaving Momo alone. As she watched them drive away, she couldn't help but look down at her stomach, touching the picture of Kael on it. As she did, she frowned regretfully.
"As I thought, making that stryker took everything inside of me, including Kael. I can't help but feel terrible for what I did to them," she thought. "Sure, I've accomplished my mission, but it came with a hefty cost. All because I let my impulsive hunger get to me."
As the cafe patrons stared at her, Momo began to panic while apologizing frantically.
"I'm so sorry, Kael! I have no idea what came over me! Please forgive me! I didn't mean to-!"
"Momo, take it easy," Kael's voice interrupted from her belly. "Don't worry about it."
"H-How can you say that when I just devoured you?!" Momo cried. "I've got to get you out! But… I have no idea how! And how am I supposed to go on the mission like this?! What am I supposed to do?!"
"Momo!" Kael then burst out. "You need to calm down! You're spiraling!"
Momo quickly went quiet.
"Look, I know this is a lot to take in, and I'm a bit freaked out, too, but you don't have the luxury to worry about our situation," Kael said. "You need to focus on the mission."
"B-But, what about you?" asked Momo worriedly. "Once I use my quirk, all the fats inside my body will dissipate and be used for whatever I make! Including you! There's no guarantee that you won't come back."
"It's fine," said Kael. "I'm already aware, and I don't mind. You need to make that stryker, right? And to do that, you need a large amount of calories. I'd say you should have more than enough for it by using me."
Momo bit her lip as she stared at her stomach. "B-But, Kael, are you sure about this?" she asked.
"I'm sure," said Kael. "Just think of it as my contribution to the mission, and I've got confidence that you'll bring me back."
Momo's eyes burned as she fought back the urge to cry. "K-Kael… Thank you… And again, I'm so sorry about this."
"Oh, quit your sobbing already," Kael chuckled. "Just don't take too long after bringing me back, OK?"
She clenched her fist as she looked up towards the sky.
"Don't worry, Kael. I'm going to do everything in my power to bring you back with my quirk," Momo promised. "While your physical body is gone, I still have some remnants of you inside of me, representing this strange tattoo. Truth be told, I've never been able to use it to create a living being before, but with some practice, I should be able to. Although… I can't imagine how much food I'll have to consume before I'm able to. Until then, I guess my work is done here."
She then returned her attention to the warehouse, which was now filled with the sounds of crashing, explosions, and the blaring of sirens. As she did, her belly let out a tiny grumble, which made her frown flatly in embarrassment.
"Hopefully, I'll be able to reform them soon. I'm starting to crave their milk again."