Izuku and Hilda had to wonder if they were dreaming. Neither of them had heard of a power that could be passed from one person to another. But it was clear that whatever the energy in Toshinori's hand was, it had nothing to do with increasing muscle mass.

"Look at your faces!" Toshinori laughed playfully before pausing. "Wow, I'm acting just like Sensei did when she first offered the power to me."

"This is crazy...and you think I could be worthy of this power?" Hilda asked in amazement.

Toshinori nodded. "Don't worry, Young Yakisani, I won't force this on you. It's your choice to do it or not. But if you accept, both a great honor and a heavy burden will be passed on to you."

"Well, guess it's a good thing she's got someone to help her carry it." Izuku smiled, making Hilda blush. "And you're saying nobody knows about this power?"

"Actually, some of the upper echelons of the Heroics Committee are aware, but only the trustworthy ones, you all know how shady some organizations can be, after all," Toshinori said. "A few trusted doctors, some members of my agency, and quite a few Pro Heroes who I trust with my life. In total, I'd say at least 1% of Japan's total population knows about [One For All]."

"That's still a pretty big number if we're doing mathematics," Hilda noted. "Still, there must be a lot of people you trust if that's the case."

"In all honesty, I could have given this power to either one of you from your actions alone," Toshinori said. "You both jumped into action while the rest of us stood idly by. While one of the world's best heroes was helpless to do anything but hold the enemy off. You acted like true heroes out there, a rare attribute in our current society."

Hilda put a finger to her chin. "Well, my Quirk, [Optimal Condition], is a Mutant-type that keeps my body in a perfect state of health. I've been able to regenerate from scratches, cuts, and bruises. I've almost never gotten sick, and I think I remember getting burnt once but easily shrugging it off."

"Quite the useful Quirk for someone who wants to rush into the thick of it." Toshinori chuckled.

"Yeah, but I had to train my body, otherwise, I wouldn't be able to stand alongside Izuku in becoming a Hero," Hilda said, draping an arm over her green-haired friend's shoulder. "When we first met, we just clicked together. Izuku even helped me out with my own training."

"You two definitely seem attached at the hip." Toshinori smiled. "But about my offer, do you accept it?"

Hilda shrugged. "I've learned Haki, Rokushikki, and even a bit of Fishman Karate. What's a nice power boost from All-Might to tie it all together?"

Toshinori smiled. "No reluctance. Heh, you remind me of myself when I was your age. Before we begin, you should know that [One For All] could tear apart whoever inherits it. But considering all the work you and Young Midoriya have put in together, especially if what I've learned about you both training under Rayleigh is true, then that shouldn't be an issue."

Hilda looked at her slender body and pouted a little, which went unnoticed by Izuku and Toshinori. Her Quirk kept her body completely healthy but it didn't necessarily mean she had to be so darn SKINNY!

"I think I have my own idea on how to bulk up for this new power I'm being given..."


Toshinori brought Izuku and Hilda to Dagobah Municipal Beach Park, which was completely filthy and covered in trash.

"Get ready, kids! We're about to get into some serious training so you both can be ready for the UA High Entrance Exams." Toshinori said.

"Well, let's do this!" Hilda said, pumping her fist in the air.

"Let's not waste any time then!" Toshinori said as he buffed up into his All-Might Form and plucked a strand of hair from his head. "NOW EAT THIS!"

"Uh...why?" Hilda awkwardly asked as she and Izuku stared at the presented hair.

"In order to inherit [One for All], you must ingest the current torch holder's DNA. Hair is the least disgusting part of the human body you can digest." All-Might explained. "Don't worry, I've washed my hair before coming here, and made sure that there was nothing in my scalp."

"I guess that makes sense..." Hilda sighed before taking the hair and gulping it down, gagging slightly at the taste of hair gel as she took a soda and chugged it down. "Phwah! So glad I only have to do this once!"

However, she soon felt the changes in her body, energy flowing everywhere as she tensed up slightly before relaxing, Izuku placing a hand on her shoulder to make sure she was alright.

"You okay?"

"Yeah, I'm fine. What a rush...I feel stronger, faster!"

"It seems the Quirk agrees with you, Young Yakisani," All-Might noted. "However, it's best that you learn to control this power. After all, one can still injure themselves no matter how trained their body is beforehand."

Hilda nodded. "Makes sense to me."

"Unfortunately, I'm not the right person to be teaching you that. After all, I was something of a prodigy when using it for the first time." All-Might admitted. "Fortunately, I have a few friends who know OFA's secret and can help you understand how to use it best. Thankfully I won't have to contact Gran Torino for this..."

All-Might took out his smartphone and hit up a few contacts. After a while, three individuals showed up:

The first was a beautiful woman with pale blonde hair and a purple diamond mark on her forehead. The second was an old man with a fit build, silver hair, and a bushy mustache. The third and final individual was someone Izuku knew very well.

"Uncle Shanks!"

Shanks Midoriya, the younger brother of Izuku's late father Hisashi, chuckled as he ruffled the green-haired boy's head. He was not an official Pro Hero, always traveling with a crew of close friends helping people around the world. He didn't have a Quirk but he made it for it in a scarily powerful proficiency in Haki.

"How's it going, you little green bean? You still keeping that straw hat I gave you safe?"

Izuku beamed and nodded. "Yeah! I'm thinking of having it be part of my Hero Costume when I go Pro!"

"So, this is the one you picked, huh?" The woman said as she looked over Hilda. "Gotta say, she seems like a good one. Could use a bit more meat on her bones though."

"I actually agree, Sister Sage!" Hilda beamed, recognizing the woman as Tsunade Senju AKA The Combat Medic Hero: Sister Sage. "I totally loved seeing you in action with All-Might, Master Toad, and Serpent King!"

Tsunade laughed. "Heh, this girl's got quite a brain on her! I like it!"

The old man nodded as he looked at Izuku and Hilda. "I heard from Rayleigh about two bright-eyed pupils of his with a natural talent for what he taught them. It pleases me to finally meet you both."

"S-Same here! Y-You're Bang Silverfang! The Martial Arts Hero who invented the Waterstream Rock Smashing Fist!"

"And you're quite well-educated as well. I can see why Rayleigh saw so much potential in you." Bang chuckled.

"When I heard my cute little nephew had gotten the attention of All-Might, I had to come over," Shanks said. "Of course, I made sure to say 'Hi' to Inko first."

"This is gonna be so cool!" Hilda gushed as she turned to Izuku. "Not just learning from All-Might but also Red-Haired Shanks, Sister Sage, and Bang Silverfang as well!"

"I know! I really hope this isn't a dream!"

All-Might chuckled at the two teens' enthusiasm. "During this training, you both will be cleaning up this beach. It's been needed for some time anyway, so might as well kill two birds with one stone. The UA Entrance Exam is in ten months, which should give us plenty of time to train you for what's to come."

"And I have just the way to bulk up..." Hilda smirked to herself.


Dagobah Beach was right at the edge of local ocean currents, picking up anything that got washed out to sea. Plenty of illegal dumpers took advantage of this. At one point in their training, Izuku and Hilda saw a hero that didn't take kindly to that.

"Whoa! It's Captain Planet!"

Captain Planet was a man who looked out for everyone and fought pollution of all kinds, not just the pollution one does to the environment, but also pollution done to people, such as drugs, abuse cases, and more. His Quirk, [Planeteer], allowed him to harness the powers of Fire, Water, Earth, Air, and Heart for various effects.

"Heh, look at that boy scout go." Shanks chuckled. "He's always gotta make things out like a cheesy 80s kids cartoon."

"Hey, he gets the job done all the same." Tsunade smiled, watching as Captain Planet took out the dumpers, largely villains hired by factories who were using less than scrupulous methods."

"Just goes to show that not all evil in this world is centered on the superpower element," Bang noted. "Villains aren't just people who commit crimes with Quirks and tools, they're also those that use whatever means they can to hurt others for their own benefit."

"And then again, there are a few villains who aren't even really all that evil, to begin with," Hilda said as she bit into a chocolate bar.

"Indeed, some people only commit crimes because they are desperate for survival or acceptance." Toshinori sadly noted. "A good Hero has to know when a crime is considered justifiable and lessen the amount of force used to bring them in."

"Well, Hilda and I always wanted to be Heroes to help others," Izuku admitted. "Because if there's one thing I learned from my dad and a few famous heroes in history; it's that with Great Power comes Great Responsibility."

"Well said, my boy!" Toshinori smiled.

"Heck yeah!" Hilda cheered, taking a hard bite out of her chocolate bar.


"Sheesh! Dragging around a fridge is hard enough but an extra 600 pounds is too much!" Hilda panted as she finished pulling a whole refrigerator with All-Might sitting on top of it.

"Nah, I lost weight, I'm only 500 pounds in this form now." All-Might chuckled.

"Speaking of weight, you've been getting pretty big yourself, kid," Tsunade noted, poking Hilda's belly, making her giggle.

Thanks to her constant binging, the once slim young woman had swelled up quite a bit in these past weeks. 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 fat around themselves.

"Hilda...is there a reason you've been...fattening up?" Izuku asked, having also noticed his friend's weight gain.

"What? No way am I gonna go around sporting crazy muscles like I'm jacked on steroids!" Hilda laughed as she gave her stomach a few proud pats. "I should look approachable as a Hero! Fat Gum's got the right idea, after all!"

Shanks smirked. "I think the real reason is because she found your secret stash, Izu."

Izuku blushed at his uncle's teasing grin and looked away, his face steaming red as Hilda giggled. It was true, the other reason she was putting on the pounds was because she knew how much Izuku liked 'thicker' girls. Then again, the cinnamon roll loved all kinds of girls, no matter what they looked like.


The ten months passed considerably. Thanks to Hilda's Quirk, her health wasn't impeded by her weight gain and she made sure to pack on just as much muscle as she did fat, but blubber was still the predominant tissue she wanted to show off.

Additionally, Shanks would sometimes ambush Izuku and Hilda in order to teach them how to react to unexpected situations. Naturally, there were breaks for meals, sleep, and classes.

Thanks to the effort Izuku and Hilda were putting in, Dagobah Beach was quickly becoming resort-worthy again. At one point, Izuku had brought up the possibility of hidden bodies, prompting Toshinori to call his friend on the force, Naomasa Tsukauchi, to investigate just in case. Fortunately, it seemed corpses were one thing no one was desperate enough to dump on the beach, so the training passed without incident.

Hilda also incorporated her newfound bulk into harnessing [One For All]. At first, she started using 5% but as the ten months went by, she made her way up to 10%.

"Man, I didn't know I'd be able to learn so much!" Hilda said as she munched on some Taiyaki with Izuku.

Hilda was now at least triple the size she'd 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 ass was absolutely massive, now large enough that each cheek more resembled massive globes than human cheeks. 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.

"Heh, you've been working up, girl. But in a good way!" Tsunade laughed, slapping Hilda on the back as she grinned playfully in return before turning to Izuku.

"Like what you see?" She playfully asked. "There's so much more of me to love now."

"Y-Yeah..." Izuku blushed shyly, which made Tsunade coo in adoration.

"You kids are so adorable, you know that?" Shanks chuckled as he ruffled Izuku's hair. "Still, you put in some good work."

"Indeed, I'm honestly amazed," Toshinori admitted. "I only set aside a small area to clean, but you both cleaned up the entire beach!"

"I can actually feel the ocean breeze. And there's fresh salt water hitting my nostrils instead of smog and rust." Bang said with content.

"We've already sent your applications for UA," Tsunade said. "Don't worry, we got your parent's permission to do so."

"Just remember this when you take the exam next week," Toshinori advised. "There is a difference between being lucky and being deserving. Don't get the two confused."

"You kids go and enjoy yourselves. You've both earned a break." Shanks said. "I'll see you at home later, Izu?"

Izuku smiled and nodded. "You got it, Uncle Shanks!"

"Come on! Let's go to Hanamura's Diner!" Hilda said, dragging Izuku along with a hungry glint in her eyes. Her appetite had increased with the rest of her body but she was doing quite well in balancing her fat with muscle.

"Y-Yeah, sure, Hilda!"

The four seasoned Pros watched the two teens leave with smiles on their faces before Tsunade turned to Toshinori.

"So, who do you think will propose first?"

"Let's not make assumptions like that!"

Shanks chuckled. "That boy's a lucky dog. Of course, there was that girl, Mipha..."

"Love comes in many forms." Bang nodded. "Something tells me Izuku will love more than one wonderful girl in the coming months."


This was my plan from the beginning; fattening up Hilda and making her use One For All to become like a suped-up Fat Gum!

If you want to know what Hilda looks like plumped up, look up Pig Out by Jeetdoh. As you can see, she's got the perfect fat build to still be able to fight and use One For All while also being soft and huggable.

If you can't already tell, I'm an aficionado of Big Beautiful Women. Don't judge me!

Anyway, we're getting to the UA Entrance Exam next chapter! Look alive as there will be quite a few surprises in store!