*Month 1*

Hilda unwrapped the king-sized chocolate bar and bit into it, savoring the sweet, milky taste. Ben was sucking on a jawbreaker lollipop as he watched his best friend enjoy herself.

"Not much progress has been made..."

"Hey, this takes time, okay?" Hilda laughed. "It's not gonna happen instantaneously like in those cartoons!"

Ben rolled his eyes. "True..."

"Hey, guys!"

Hearing the familiar voice, the two turned to see Izuku and Kohaku approaching them. Kohaku had been shrunken down by Sumiko's powers in order to not draw too much attention to herself.

"Yo, what are you guys doing today?" Hilda smiled.

"Just buying groceries. You'd be amazed at how much food we go through in a day alone." Kohaku giggled.

"Heh, better start buying extra! I might be getting some good eats there myself!"

"Hilda, we shouldn't impose..." Ben muttered, only to be elbowed in the side gently.

"Lighten up, Ben! If I'm gonna be ready to get [One For All], I'm gonna need a lot more weight!"

"We've got plenty of equipment for building up muscle too." Izuku pointed out. "We'll have your ideal body in no time as long as you follow our lead."

"Alright! Then let's do this!" Hilda cheered as she took a hard bite of her chocolate.

DEVIL

*Month 3*

"Man, it's only been two months and she's gained so much..." Ben thought with a small blush as he and Hilda went out for ice cream, being joined by Riku, Hibiki, Katsuki, and Kirby on a triple date as the pink-haired girl liked to call it.

"Mmm… I'd say I'm making some really good progress." Hilda said, licking her lips.

Thanks to her constant binging, the once slim woman had swelled up quite a bit in the past two months. Her short shorts had ridden up, trying to contain the sizable layer of flab that was her stomach. It stuck out from the rest of her by nearly an entire foot, pushing out past her shirt and giving anyone around her a good look at the jiggling mass of chub.

Of course, that wasn't to say the rest of her was lacking in growth. She'd gone up by at least two cup sizes since she'd started gaining, and her ass was looking much rounder than before. Laying beneath these bountiful buns were a set of thickened thighs, now double the size of their former selves. Even her arms seemed to have been affected, now sporting an entire layer of flab around themselves.

Most women would be concerned about gaining this much weight, but Hilda couldn't care less. Honestly, Ben admired that about his best friend, she never let much bother her unless it was actually serious.

"I'll say!" Riku laughed as she poked Hilda's bulging belly.

"Hilda, it's mostly just fat right now." Hibiki pointed out worriedly. "You need to build up muscle as well."

"I know, I know!" Hilda laughed reassuringly. "Trust me, you guys have been helping out lots! But I gotta eat to make sure I'm balanced out!"

"Just don't try overdoing it to the point that you're a huge fucking blob." Katsuki snarked. "Only Kirby's able to eat an entire country's worth of food and not gain a single pound from it."

"That's because my stomach is an entirely separate and endless dimension of reality!"

Everyone looked at the pink-haired girl from outer space as she said that. Only Katsuki wasn't phased by her words, as if he already knew this.

"Whoa, really?!" Riku gawked.

"Yeah, when we were getting her registered and checked up to make her an official citizen in Japan, the doctors did some tests and her stomach is actually an honest goddamn black hole." Katsuki dryly clarified.

"So you never feel full..." Hilda muttered. "Talk about getting your money's worth at an all-you-can-eat buffet, though!"

DEVIL

*Month 5*

It was a bright sunny day, perfect for Kazuya to channel the power of [Sunshine] to help with training Hilda while Chikara and Toshinori stood watch as referees. Maetel and Dorothy were also there with water bottles handy.

"Wow, Kazuya! You're pretty strong!"

The boy, currently in his giant muscular form, nodded his head with a prideful smile as the two locked hands. The heat his body was producing made Hilda sweat but she preserved.

Eventually, Kazuya managed to get the upper hand, and with a hard flex of his muscles, he managed to bring Hilda down.

"Heh. Guess I still have a long way to go, huh?" She asked, chuckling to herself.

"And you shall." Kazuya said, a smirk on his face. "Any friend and ally of oyur crew will come to reach a level close to us."

Hilda had gotten much bigger now, both in fat and muscle, but she still had a long way to go before she reached her apex, as she considered it. Thankfully, her Quirk helped keep things balanced for her body, allowing her to keep pace with her friends in their own training despite her added girth.

"That Quirk of yours really is a godsend, Young Whitelane," Toshinori noted. He looked much healthier now though he still had a gaunt, skeletal appearance, the healing of his body thanks to Hibiki having been a godsend. "I know we still have a few more months to go before the UA Entrance Exam but I feel like you're prepared to take the next step."

Kazuya shrunk down to his normal skinny self as Hilda looked excited, her softer but still gorgeous face brightening. Izuku also took notice as he and the rest of the crew came over.

"Is it time? You think I'm ready to inherit your Quirk now?"

"Let's not be too hasty, my girl. But yes, I think now is the time to up your training, especially since you've certainly been packing it on." Toshinori chuckled as he suddenly plucked out a strand of his hair and held it to Hilda. "NOW EAT THIS!"

Everyone present had a grossed-out look on their face except for Maetel, who merely raised an eyebrow, and Dorothy, whose stoic face did not crack the slightest bit of emotion.

"Uh...why?" Ben asked.

Toshinori cleared his throat. "Sorry, let me explain; there are two important factors in passing on [One For All]. First is that the current holder must want to pass it on. That's already covered, of course. The second is that the one inheriting the Quirk must swallow a sample of the holder's DNA. I just thought a strand of hair would be the least gross way to go about it."

"I would have been perfectly fine if you just spat in my drink to do so..." Hilda gagged but took the hair anyway and swallowed it. "Oh god, so glad I only have to do this once..."

However, she soon felt the effect, energy flowing through her body. He could feel her muscles underneath her flab hardening as steam started to come off him.

"Ooooh, tingly!" She giggled as she looked herself over. "Huh, I don't feel any different."

"Well, from the look of things, the Quirk seems to be agreeing with you for the most part," Toshinori noted. "Still, remember what I said in that it could be dangerous to handle the power of [One For All] carelessly, as it could damage your body if you don't harness it correctly."

"I think we can help out," Shun said before pausing. "Yet...I can't help but sense something inside Hilda now..."

Shun curiously put a hand on Hilda's blubbery bicep and used [Invasion] to enter her mind. He soon found himself in some dark swirling void.

"Who are you?" A mysterious voice spoke up.

"I am Shun. A Seraphim created by Dr. Vegapunk modeled after the Goat Sin of Lust, Gowther." Shun introduced. "And you are?"

A skinny man with snow-white hair and tired-looking eyes stepped out of the shadows. He smiled as he offered his hand for a shake.

"Pleasure to meet you. Don't exactly know how you ended up here, but I've read stories about the Seven Deadly Sins and their exploits so you being modeled after Gowther makes sense." The man greeted. "My name is Yoichi Shigaraki, the very first user of [One For All]."

"I see...I ended up coming in here to try and help my friend Hilda, the current holder of the power, learn how to harness it properly without hurting herself." Shun explained. "What is this place?"

"This is the Vestige Realm," Yoichi said. "It's where the spirits of the wielders of [One For All] go when they die. Well, we're also in Heaven, but a small part of us stayed here to help guide future generations."

"Fascinating...so this is connected to both the living world and the afterlife in a sense?"

"Well, yeah. Quirks are both physical abilities and connected to the soul, so even when we move on, our souls can return here in a spiritual sense if our Quirks are still inside something else...or someone else."

"I don't follow."

"You and your friends will understand in due time." Another voice spoke up as Shun and Yoichi turned to see a rough-looking man with salmon-pink hair walk in. "But in the meantime, your little mind trick ended up waking us up. Though we were already getting there since your friend managed to hit singularity with [One For All]."

"I see... How fascinating," Shun noted.

"Well, you helped jumpstart things along so we'll help the Ninth from here!" A jovial woman's voice spoke up as a beautiful lady with black hair and dressed in a hero costume with a white cape stepped in. "You don't need to worry, we'll take care of everything."

"Alright..." Shun muttered as he bid the three farewell and left the Vestige Realm, returning to the physical plain.

"What a funny kid." A man with a shaved head, stubble, and a bandolier of bullets said as he came in next. "Then again, all those kids our new successor is friends with are pretty charming too."

"Still, Ninth's best friend..." A man with cadet grey hair in a spiked ponytail and wearing a headband muttered as he stepped in. "His power...it's way too similar to HIM for my liking."

"We saw and heard what he could do through Toshi's eyes and ears." The woman said. "But from what we can see now from Ninth, he's a good kid. I say we give him the benefit of the doubt."

"Nana is correct, Bruce." Yoichi voiced his agreement. "If the one known as Benio Torekuroshi IS related to my brother...then I dare say the apple fell so far from the tree, it instantly made its way to the market."

"That idiom didn't even make any sense." Bruce grumbled.

"Your look doesn't make any sense!" The silent one in a costume that must've inspired Best Jeanist snapped.

"…"

"…."

"…."

"….Roku, baby…" Nana cooed.

"….I just wanted to be included."

Real world

Back with Shun, he shook off the daze he felt as everyone looked at him curiously.

"What happened?" Yaato asked.

"I was in this void...and then these people came out, saying they were the previous holders of [One For All]. I think they told me they'd be helping Hilda master her new power."

Toshinori's eyes widened. "The previous holders... Was one of them a woman with black hair?"

"Yes."

"Sensei..." Toshinori whispered softly before shaking his head. "Well, even if the previous holders of [One For All] are planning to help, we here still need to set up a plan for Young Whitelane to learn how to control it throughout your whole body."

"Well, then I gotta get BIGGER!" Hilda grinned excitedly. "What are we waiting for?! Yaato, cook up a feast!"

Yaato did some snapping finger guns. "You got it, you gorgeous gluttonous goddess!"

DEVIL

*Month 8*

"Alright! Two more months 'till the Entrance Exam! I am so ready!"

Izuku smiled as the whole crew decided to hit the town after another rigorous day of training. Hilda had managed to learn how to harness a decent amount of [One For All], currently being able to use 5% of its full power.

Speaking of Hilda, she was at least triple the size she'd first started at. Her body had grown, not just in weight, but in width, as if to accommodate her growth. Her stomach, which had already been round and flabby, had now expanded to become the largest part of her body. It stuck out nearly three feet and was now so large that it covered her crotch.

Resting atop this enormous gut lay her breasts, which had undergone similar growths. No longer the flat size they'd once been, Hilda's bosom had blossomed into a beautiful rack. They were easily within the E-cup range by this point, and both were soft to the touch.

It was safe to say that most of Hilda's weight had been distributed fairly evenly. Her breasts and belly were developing nicely, and her flabbier arms remained as firm and active as ever thanks to her training. But of the newfound additions brought on by her weight, her bottom half had easily changed the most.

Hilda's butt was massive, now large enough that each cheek more resembled massive globes. Her round, enviably enormous rear was supported by a set of glorious, tree trunk-sized thighs; made all the more obvious whenever she so much as took a step. It was safe to say that Hilda was getting to be the talk of the town with how much she was porking up, but she didn't mind that.

"Man, you're so soft and squishy but firm and tough too!" Kirby giggled as she snuggled up to Hilda, who smiled as she took a bite out of some Taiyaki.

"Hehehe, easy there, Kirbs!"

"So, how's it feel to have your fantasy come to life?" Sumiko teased Ben as she looked over at him, seeing how bright red his normally pale face was.

"I-It's fine..."

"But man, Hilda's a TANK!" Riku said. "I never thought I'd find anybody with an appetite bigger than mine!"

"And yet she's still so undeniably gorgeous!" Makoto added. "I could stare at that ginormous ass all day!"

"Makoto, it's always ass and breasts this and that." Yaato chided. "The real treasure is the ABSOLUTE TERRITORY."

"Ugh, give it a rest..." Katsuki scoffed.

Izuku just smiled as he listened to his friend's banter. In just two more months, they'd all be ready to go to UA. It felt like a dream come true and to think he thought his dreams would never be reached due to being Quirkless. Who knew getting shipwrecked and washing up on a remote island would change his fortune and grant him so many amazing friends?

As for Ben, he was trying his hardest not to stare at his best friend's massive majestic frame. Hilda noticed him staring and gave a playful smile in return, making him gulp and scurry ahead to try and hide his blushing face...only to immediately crash into somebody without looking.

"Ooh, that looked like it hurt!" Chikara winced.

The rest of the crew ran over to make sure Ben was okay as he groaned, picking himself up.

"Ugh, sorry about that. I didn't mean to..."

It was then Ben's eyes locked with the most mesmerizing green orbs he'd ever seen. As it turned out, he had landed on a girl, a CUTE girl at that!

She had light skin with rather curly short orange hair that came down to her chin with a small cowlick on top and a pink bow on the back of her head. Adorning her face was an adorable splash of freckles.

She wore an off-white old-fashioned styled off-the-shoulder blouse with frill detailed trim and frill flared cuffs that half covered her hands alongside copper button detailing on the lower parts of her sleeves. She also sported a short gray pinafore dress with golden trim on the hem alongside four light green stalagmite-styled stripes on the lower half of the dress, two on the front and two on the back, accompanied by two matching colored circles above the tips that had a stripe that ran around her waistline, with golden outlines, and a detachable black and light green collar.

She also wore a pair of black thigh-high leg pieces that seemingly were attached to black shoes. The leg pieces had a single green stripe up the sides that appeared to light up. She also wore a silver backpack.

"Uh, Ben, you're staring." Kazuya awkwardly said, snapping the bespectacled boy out of his trance as he cried and jumped to his feet.

"I-I'm so sorry!"

"Sal-u-ta-tions!" The girl greeted, a bright smile still on her face.

"Um... hello." Izuku greeted back.

"Are you... okay?" Kohaku asked.

"I'm wonderful! Thank you for asking."

"Do you... need help getting up?" Hilda asked.

The girl actually seemed to think about it for a second before smiling again.

"Yes!" With a spring and a hop, she was instantly back on her feet. "My name is Penny! It's a pleasure to meet you!"

"Hi, Penny. I'm Izuku Midoriya." Izuku smiled.

"Hibiki Hayashi." Hibiki greeted formally with a bow.

"Riku's the name!" Riku proudly went next.

"Um...Name's Benio Torekuroshi. Just call me Ben. S-Sorry for bumping into you."

"Hilda Whitelane!" Hilda beamed, already taking a liking to this weird girl.

"Katsuki Bakugou. Remember it because that's gonna be a big name when I go Pro."

"I'm Kirby!"

"The name's Makoto, can I see your-"

Chikara slapped his hands over his brother's mouth. "I'm Chikara!"

"Name's Yaato." The silver haired Serpahrim saulted with a single hand.

"Just call me Sumiko, dear."

"Kohaku!"

"Kazuya. It's nice to meet you too."

"Are you sure you didn't hit your head?" Shun asked before being bopped over the head by Kohaku. "Oh, I'm Shun."

"It's a pleasure to meet you!" Penny beamed.

"Uh... You already said that." Riku awkwardly pointed out.

"...So I did!"

"I like her." Hilda giggled to Ben, who could only nod as he began to resume walking.

"W-Well, sorry for bumping into you! Take care, friend!"

The crew began to take their leave while the girl seemed surprised at something.

"Well, she was weird. But hey, weird chicks can be sexy." Yaato shrugged.

"Ugh, of course you'd say that!" Kohaku huffed.

"She seemed pretty interesting..." Izuku noted. "I could sense something strange about her with my Haki, but..."

Suddenly, Izuku realized that Penny was in front of him and jumped slightly.

"Oh! Um, was there something you needed?"

"What did you call me?"

"Um...I don't think I called you anything."

"No, not you." Penny clarified before turning to Ben. "YOU!"

"M-M-Me?"

"You called me 'friend'! Am I really your friend?"

Ben tried to open his mouth to say something when Hilda skipped up behind him and wrapped her blubbery arms around him, hugging him close as she grinned playfully.

"Of course! Any girl as nice as you should have a hundred friends! I can be your friend too if you want!"

"H-Hilda, don't-!"

"Sen-sational!" Penny cheered. "We can paint our nails, and try on clothes, and talk about cute boys!"

"Well, you've got a cute boy right in front of you!" Hilda teasingly said as she pushed Ben closer to Penny, the bespectacled boy locking up and gaping like a fish as he struggled to find the right words to say.

"Hilda-Chan, please. I don't think his heart can handle it." Hibiki worriedly said as Hilda just grinned cheekily.

"Hey, I've known Ben my whole life. I'd give him the world if I could."

"I kinda figured you'd be jealous..." Kohaku pointed out.

"Why would I be? That girl is cute!"

"So, what are you doing around here?" Katsuki asked, pushing Ben aside to save him from embarrassment.

"I'm here to enroll in UA!" Penny smiled. "I'm taking the Recommendation Exam!"

"You're going to UA too? So are we!" Riku said excitedly. "Maybe we'll get to be in the same class!"

"Forgive me, but you hardly look the part," Shun said bluntly.

"I'm combat-ready!" Penny assured, giving a cute little salute.

"Oh really? You up for a spar?" Bakugo smirked

"..really, Katsuki?" Kirby sighed.

"Hey, I wanna see her fight, too!" Yaato added

"Oh sure, ya second rate cook." Katsuki smirked.

"What was that, you overspicing son of a bitch?!" Yaato snapped, getting in the blonde's face.

"You heard me!"

"For your information; I am an epicurean and experimentor! AND! I heard Komeko say I'm the better baker!"

"…."

Katsuki suddenly became more angry than ever.

"YOU TOOK MY ADORABLE LITTLE SISTER'S LOVE WITH SWEET SHIT?!"

"Isn't she Izuku's sister?" Ben asked

"I only just got back, so technically…no." Izuku whimpered, getting patted on the back by Hibiki and Kohaku.

"LET'S TANGO, TANNED TERROR!"

"Oh, real original!" Yaato smirked as he reached behind him….

"Please, ignore those two." Riku said, keeping Penny's attention away. "Would you? Like a friendly spar with us I mean?"

"Once we find an appropriate area, I would be delighted!" Penny smiled.

(Mrotrax: Add whatever fun conversations you want. If you can't, that's okay. Nothing has to be perfect.)

Izuku smiled seeing a new friend being made before his Haki suddenly picked something up. His head quickly turned to the source of the disturbance before rushing over to it. His friends quickly took notice and all of them, including Penny, quickly followed after him.

When Izuku made it to the source, he saw a terrified little girl with long pale-blue grey hair, apple-red eyes, and a small brown horn poking out of the right side of her forehead.

"Are you okay?" Izuku asked worriedly as his friends caught up.

"P-Please...h-help me..."

"There you are, Eri! Get back here!"

The girl cowered in terror as a small group of men in plague doctor masks arrived. They noticed Izuku and his friends and quickly drew their guns on them.

"Give us that girl and nobody gets hurt!"

Izuku narrowed his eyes as he, Katsuki, and Hilda rushed forward while the others moved to keep the girl known as Eri safe.

"Gum-Gum BAZOOKA!" Izuku shouted, stretching his arms back with the [Gum-Gum Fruit] before snapping them forward to deliver a powerful double palm thrust, sending two of the thugs flying.

"ÉPAULE SPRAWL!" Katsuki cried, delivering a downward kick to the bulkiest of the thugs' shoulders, knocking him to the ground before hitting him with a downward explosive palm to the face.

"HA!" Hilda yelled, delivering a Sumo Palm Thrust to the last of the thugs' midsection, sending him flying into a nearby wall and knocking him unconscious on impact.

With the thugs dealt with, everyone turned their attention to the scared little girl they had just rescued. She was still shaking in terror and Sumiko was gently holding her close, rubbing her back in calm circular motions while whispering comforting words to her.

"Why were those creeps after her?" Kirby asked.

"Did those bad men hurt you?" Sumiko cooed as Eri was still shaking, but not as much anymore.

"I've contacted the police. They should be here any minute with questions." Penny said, having been quiet until now.

"I'm calling All-Might too." Hilda said as she took out her phone. "He needs to hear this as well."

What Izuku and his crew didn't realize was that they were about to put the screws to a truly nasty organization...

Knightmare Lord A/N:

Feels like a good spot to end off here! Figured I'd do 99% of this chapter so Mrotrax has an easier time with his other stories. Though of course, I'm still letting him add whatever he wants as well.

Also, we've met Penny Polendina, the Android Cinnamon Roll from RWBY! Of course, with how we've introduced Hilda and certain characters from One Piece as well as Maetel from Galaxy Express 999 and Dorothy from The Big O, crossovers are to be expected!

Mrortrax A/N:

WE HAVE A TVTROPES PAGE! Feel free to read and add to it!

Not much from me, just the set up of a fight between Penny and the crew to test themselves and Kazuya, even in his 'Proud' form, assuring Hilda she and anyone else the Devil crew friends will become great Heroes.

Just to make him a wee bit different than his ancestor.

See you soon!