[Possession, Expansion, Identity Death, Feminization, Extreme Gas, Brattification]

"It's no use. What can I do?"

Those were the words that left the mouth of Izuku Midoriya. Because everything had gone horribly, horribly wrong. And it was all his fault for not being able to save his friend in time. As a result... His mentor, All Might, didn't have any more embers of his quirk left in him. And thus the world had to start changing, even though none of them wanted that.

If he had just been stronger, if he had just been faster... He would've been able to save everyone. It was something that frustrated him. He wanted to the greatest hero of all, and here he was. Being the cause of so much horrible stuff. What was he supposed to do when burdened by that knowledge..?

The green-haired young man just sighed quietly as he buried his face in his pillow, very nearly sobbing out of sheer frustration. At this point, he was desperate. He'd do anything to make things right. Not by turning time back, what had happened couldn't be stopped. But he wanted to stop things like this from happening ever again.

Slowly but surely, the boy started to drift away to his dreams. Dreams where he really was the greatest hero of all...

Right up until his phone started to vibrate on his nightstand, shocking the boy awake. Who would call him this la... No, wait, this wasn't a call. It was just something being installed to his phone? Weird, he was pretty sure he had disabled automatic updates.

As Midoriya turned on his phone and looked at the screen, he couldn't help but twitch a little in surprise at what he saw. A brand new app on his phone... And the icon was that of a fat looking ass. Complete with a bulge hanging down below. Did... Did somebody send him a virus? Seriously, as if his day wasn't bad enough.

"Might as well just check things out." He muttered as he tapped on the butt, a blush flushing its way onto his cheeks as it felt like he had just done something incredibly erotic. Even though it was just an icon, not an actual pair of buttocks...

That is, until an actual set of asscheeks popped its way out of the icon, courtesy of some sort of digitized construct climbing out of the phone and stretching their arms with a light giggle. "Took you long enough to notice, I've been waiting aaaaallll day..." The figure chimed, their voice digitized as a few pieces of 0s and 1s drifted off their form. It wasn't a perfect holographic representation of their body, but it would do this one time.

Midoriya couldn't help but let his jaw hang a bit ajar as he looked at the figure. It was a dusky looking feminine figure with her black hair tied in a bun, as well as a set of goth-like clothes that exposed plenty of her thick tit flesh thanks to her top only covering some of those mighty melons while the rest was pressed against by a fishnet. Combine that with her incredibly tight pants that only served to emphasize that yes, there was a bulge between those thighs, and she... Well she was confusing to say the least, but this wouldn't be the first time that he had been faced with somebody that had confusing characteristics that took a bit to get used to.

But hold on. She said she had been waiting? "Who... Who are you exactly?" He asked, bunching his legs together as he looked at the life-sized hologram that came out of his phone. All while blushing. Not just because she was fairly attractive, especially with the balance between her tits, her hips and her cock... But also because he had touched her. He didn't understand how he could touch a hologram, but he wasn't about to dwell on the idea for too long. Besides, if she didn't approve of it, then he'd have to apologize.

"Name's Blair, Deku. You've been in a rough spot, haven't you?" The holographic goth bitch said with a grin on her face as she leaned nice and close to him. "And you want a chance to save all those friends of yours, don'tcha? Well don't you worry. I know exactly what you can do."

She had him by the balls. She knew exactly what he was suffering from. How was that possible? He had never heard of her, but... He really was desperate enough to try anything that would let him do that. "What can I do?" He asked, looking straight into the gothic hologram's eyes.

"You got that power of yours by eating that old man's hair, yeah? That stuff was a riot, you know?" Blair chuckled, grinning a bit as she reached towards her buttocks. "So, I'll give you a little piece of my power. But instead of eating my hair, and trust me you wouldn't want to eat it since it'll get stuck in your teeth, how about something nice and quick and dirty so we can get on with the show?"

Midoriya nodded along, blushing brightly as Blair suddenly swung her ass towards him. It didn't take a genius to understand that she wanted him to eat it. Well, at least he'd just have to give it a few kisses and everything would be alright..? He did wonder what kind of powers she'd have, but if she knew all about the way that he got his powers... Something that he would've been surprised about if not for the fact that she had already proven herself to be more than the average individual just by having waited for him, then...

The green-haired boy took a deep breath as he grabbed ahold of her buttcheeks and pushed his face up against it, giving her hole a lick through the fabric. It felt... Nasty, to be frank. But surely it was something that he could endure, if it meant that he could save his friends in the future-

*BRAAAAAAAAAAAAAAAAAAAAP*

Midoriya didn't stand a chance. He had fallen straight into Blair's trap. The intense and disgusting smell of her mind-melting farts started to erode his brain, all while that stink took the place of any thoughts that it had managed to swallow. All while he trembled and panted as he helplessly started to lap up more and more from her hole. As if this one blast had made him completely and utterly addicted.

Of course it did. Anybody that smelled the farts of somebody as divine and as devious as Blair would turn into little more than a thrall. But that wasn't what he was going to be. She was giving him the full dose of her power. Letting that intensely powerful fart, which was draining the color from the bed underneath him due to the sheer strength of the stench, overwhelm him bit by bit.

His skintone turned from pure white to something akin to her own, gaining that nice dusky layer all while his hair turned the same shade of black. His outfit changed in much the same way, his pajamas turning into little more than one big fishnet that covered him from neck to toe. Because he didn't need to sleep in anything else, all the little parts of the net digging into his more tender bits.

Midoriya lapped up more and more of that delicious gas, he panted and gasped as the pressure grew in his chest... And before he knew it, two fat tits exploded forth with the same intensity as one of Kacchan's explosions. Those massive melons were even bigger than the ones that Blair had, and the only thing keeping them in check was the net covering his body.

As he swallowed the last few specks of Blair's deliciously corrosive gas, he couldn't help but belch a bit as that very same sort of gas left his lips, all while his cock trembled and grew a few inches to make it look that much more appetizing. Putting an end to his transformation, and an end to Midoriya as the world once knew him.

"Ahhh..." The new existence sighed as that foul smell left his lips, all while his hands got busy with his new assets. Those fat tits and cock wouldn't do without a bit of teasing, after all.

He grinned and licked his lips, trembling a bit as he could already feel that disgusting slop he called cum pouring out from the tip of his cock, with a bit of milk pouring out from his nipples as well. He had a body that couldn't compare. But he needed to put it to good use, and tomorrow was a new day...

"Time for Bleku to take over. Don't worry, Deku. I'll take good care of all those nice kids you've neglected, heheheh..."

---

The next day was supposed to be completely ordinary. It was supposed to be a return to normal after everything that had happened regarding All Might and the full and complete loss of his powers.

"Deku? You look a bit... Different..."

"Midoriya... What in the world has happened to you..?"

"What the HELL, Deku!?"

And yet Bleku's presence would derail it all, as he walked up to three of his friends. The kind-hearted Uraraka Ochako, the determined Shoto Todoroki, and the incredibly easy to anger Katsuki Bakugou. The three were good friends of his, so naturally they were shocked to see what changes the boy had went through.

It certainly didn't help that Bleku, since he was so dissatisfied with the way that he dressed before, decided to wear his hero uniform to school. Except he had modified it to bring greater emphasis to the more important areas. He had cut away parts of the uniform that covered his arms and his legs, all while making the pants and the top shorter and shorter to the point where they did very little to hide anything away. He had also swapped out the colors for something more goth-like, all while adding 'PLUS ULTRA' across both the front of his top and both of his asscheeks, though it seemed to have been smeared into the cloth using nothing but pure filth...

"Nothing's wrong with me, guys! Maybe you're thinking something's wrong because you just don't love me enough. You know?" He grinned, all while his eyes started to glow suck a sick and disgusting color. All so he could toy with them using his powers.

The other students were utterly unable to protect themselves against powers beyond their understanding, all while they started to grin like the perverts that they were forced to become. Of course they'd love Bleku, they loved him a lot. They just needed to show it.

"Sorry, Bleku!" Ochako giggled as she grabbed ahold of her cheeks with one of her hands and her crotch with the other, her powers activating for but a moment as she let a violent *BRAAAAAAAP* echo out from her ass, the sheer power of her flatulence sending her flying into the sky due to her body lacking any gravity. And at the same time, she tugged hard on her pussy to the point where a cock had taken its place, her cum idly drooling around in the air thanks to her power. "I forgot I hadn't loved you today, hope you like it! It's not as strong as yours, but I'm still trying!"

Todoroki grinned a bit as well, panting and gasping before digging his teeth into his lip and letting out a violent sounding *FRRRRT*, his gasses igniting the second they left his ass and burning away his outfit until he was left completely naked. At the very same time, he froze his flames to the point where he could sit down on his own gas, using the center point of the flame as a dildo that would stimulate a boy like him even more than a proper cock would. It’s all-too-true too, because his own cock, while incredibly fat, couldn’t get erect compared to the frozen one he sat on. It definitely drooled disgusting cum though, the cold cum hanging from his rod and swinging back and forth slightly as it was practically frozen to the tip. "You like what you see, Bleku, or do I still have to show you more of my love..?"

Bleku giggled as he had immediately turned those two into complete and utter perverts that cared more about their 'love' than anything else. It was easy to do so too. He just rewired their brains to think that farting your heart out was an expression of love... And then made them absolutely obsessed with that. And he also gave them something to obsess over, the form of their fat cocks that were conducting their powers just as efficiently as the rest of their bodies. But he had to pay them back for their love, didn't he?

Although, there seemed to be one thing missing. And that thing was the utter devotion of a certain explosive boy that had definitely been affected by Bleku's powers, though he seemed to be struggling against the way that his mind had been rewired. Surprising, considering how quickly the other two had fallen, and how it seemed like he fell initially.

"T-The hell... Y-You're not Deku. D-Deku wouldn't... A piece of shit like him wouldn't do something like this!" The violent blonde shouted as he tried to use his powers to detonate close to his face. Anything to knock him out of this quirk's control. It was humiliating seeing his two classmates fart and abuse their powers to fart even harder. "Get the fuck out of him, or stop using his looks..!"

Bleku giggled. Ah, Kacchan was so adorable when he was mad. But that was why he needed to change him. Why he needed to make sure that he fell in love with farting just like the others had. But he couldn't just fart all over him to turn him. That'd be no fun.

"Relaaaax, Kacchan. I'm the same I've always been. Just like you've always been a real dirty boy. Maybe I should give you a little reminder, so you know exactly what you've always been." The black-haired corrupted hero giggled as he walked straight towards the explosive hero-in-training, all while the two fart sluts watched with completely stupified grins on their dumb faces.

Bakugou didn't like this. And as long as he still had his quirk, he would find a way to get that fake Deku out of his face. He just needed to ignite. He just needed to..!

*BRAAAAAAAAAAAAAAAAP*

The blonde boy's eyes widened as he realized what he had just done, as an explosive bout of gas poured straight out from his hole. That wasn't supposed to be possible, his quirk relied on the sweat from his hands. Not his ass. The hell made him fart!? AND WHY THE HELL DID IT FEEL SO GOOD THAT HIS SHORTS GOT ALL STICKY!?

Bleku giggled as he watched the sheer look of shock on Kacchan's face. It was delightful. He had his first fartgasm, and he really couldn't handle it. But it was fine. He'd help. All it would take was to turn his ass towards the young man, and his powers would do the rest.

Bakugou looked down at the fake Deku's fat fucking ass, and it was like he was being magnetized to it. He didn't want to smush his face right up against it, but his body didn't listen to his mind's command as he was forced onto his knees, pinning his face between those cheeks.

"Good boy. Here's your treat!"

*brrrrraAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAP*

The fart that fired straight into Kacchan's mouth was about as intense as the one that had melted away Deku and given rise to Bleku. To the point where the boy's uniform completly burst off him and left him wearing nothing but his cum-soaked boxers. All while his skin turned the same dusky shade as Bleku's own, the boy trembling as he kept cumming and cumming while swallowing that mind meltingly strong fart.

As Bleku pulled away, ass still blasting and giving the boy's face the same darkening treatment, Kacchan couldn't help but giggle and slowly stand up after the stream of filth gave way. Not that he stood up very far, because he had lost about half his height after all that.

Gone was Bakugou. Now Bratkugou took the stage, the filthy brat grinning as explosive *BRAP*s echoed from his ass all while he fondled his fat junk. "Blekuuuu, let's plaaaaay!" The needy filthy brat cried out, a sentiment shared by the friends that had been watching it all unfold.

Those very same friends had reacted to the smell of their buddy’s farts. Though the difference between the two at this point really just came down to their hair. Bratchako, floating around in the air stroking her fat cock, had the same hair as usual, while Bratodoroki’s hair was mismatched as usual with a nice black shade to represent how Bleku had corroded him, and a disgusting green shade like the farts he loved so much. All while he had snapped his cup off the tip of his rod, licking and slurping on it like a nice cold treat.

Bleku was more than happy to help. Especially as he was going to make everyone just as awful as Kacchan...

---

By the end of the day, Bleku was wiped. Mostly because he had been using a lot of students as proverbial toilet paper after giving them the full dose of his filth. Who knew it could be this exhausting to convert so many people into filthy brats that had fat cocks and absolutely needed to worship the one that had converted them?

Still, he wasn't quite satisfied yet. Maybe he needed the little cherry on top...

"E-Eh? Why's it stink so much in here..?"

Bleku slowly but surely turned his head towards the young voice that he heard up ahead. And a bright smile started to worm its way onto his face. Because there was a boy that still hadn't been touched. A boy that could still be defiled.

Izumi Kota. The boy that looked up to him, after he had saved him from being defiled by a villain. He'd be just perfect...

"Hey there, Kot-" Bleku started to speak, only for his body to tremble. The words weren't leaving his mouth, what was...

"Stop... R-Run, Kota..:"

Ah. So that's what was going on. Deku was trying to rise to the surface once more. It seemed that after Bleku had enjoyed breaking all of those other students, and even the teachers... The boy still wanted to try and protect the youths of the world. How utterly heroic.

Bleku couldn't help but smile a bit before his expression twisted into nothing but worry and frantic screaming. "R-Run, Kota! Get away! I don't know how long I can hold myself back! You have to get away!" He shouted, doing his best to try and save the boy one more time.

Kota listened. And he started running. Running, and running...

Right towards the corrupted hero's crotch, pressing his cute young face right up against the exposed cock that was just drooling smegma right onto the top of his hat. He told him to run, but he never told him where he should run. Besides, after having gotten a whiff of that wonderful stink... How could he possibly resist?

Seeing the boy that he had tried to protect dart towards his crotch like a needy little gremlin set something off inside him. Why should he resist when this was what happened to anything that he touched? He should just give in and accept it...

Deku's consciousness faded into the back of his head as he slammed his cock straight down the young boy's throat, quickly filling it with his smegma-laden cum as he let out a laugh.

Bleku was back in control. And he would be in control forever, as his plan to turn the whole world into dirty brats was progressing smoothly. Who knows, maybe the villains would show up soon. He did manage to turn one of their moles into one too...

This was how he was going to save everyone. And since Deku just helped by teaching Kota what it meant to suck cock... He was sure that the boy didn't mind.

He got what he wanted, after all.