Beach Body Heroes by W-Killer8. Edited by Me.

Ah, summer vacation. The time when all students were allowed to sit back, drink something refreshing and have fun in the sun. It was the perfect moment to unwind after a semester full of classes and studying. Thousands of teenagers across Japan looked forward to the various summer activities. Be it visiting the pool with friends, or hitting the beach to soak up some sun. No school could take this away from them.

The same went for UA. Principal Nedzu believed strongly in having fun during this vacation in particular, for some inexplicable reason. Rumors had it that the furry genius organized trips for the school's staff each year – mandatory apparently. So in other words, not even Eraserhead, destroyer of freedom and joy, could hold his students prisoners for remedial classes. Although he was sure to hand out plenty of homework.

If he had to suffer, then so would his class.

But that didn't deter the members of class A. They were hellbent on enjoying their summer vacation, and leaving the extra homework alone until the last moment. Or in some cases, like Iida or Momo, finish it beforehand so that they wouldn't have to worry about it. Everyone knew that was wishful thinking though. Both representatives were too invested in the welfare of their classmates, and would eagerly help anyone who asked.

Nevertheless, the sun shone brightly today. The beach on the eastern side of Nabu Island was moderately packed. Dozens of tourists were playing together, swimming in the water or sunbathing leisurely. Children ran amok, loudly playing with each other, while the parents watched with content smiles. The island didn't get many visitors normally, but it was a nice location for a holiday. And that meant plenty of people coming to the island during the holidays.

Local ice-cream trucks were parked along the road, and a few merchants had set up stalls on the beach itself. Some rented out boats, while others provided parasols for the tourists so that they could rest in the shade. The latter was more than welcome. It was a bit too hot this afternoon. That explained why there were so many people in the water, prompting the lifeguards to keep a keen eye on them. Frankly it was a miracle they could keep track of all those swimmers.

Above all, the scene was relatively peaceful despite the noise. Probably because of the new local hero agency. After the devastating terrorist attack, which had been thwarted by the tstudents of UA, several heroes had banded together and made the island their new home. As such, villain activity was practically non-existent.

The agency took on some additional help, however, as the surplus of tourists might attract unwanted attention from society's trash. And these brave students were all too happy to give a sense of security and–

"Oi! Why the fuck did I have to come here?!"

Several kids nearby were startled by the loud, angry voice. They dropped their volleyball, and ran away in fright at the sight of a disgruntled Katsuki Bakugou. A handful of adults gave the teen disapproving looks.

"Ah, come on, Bakubro. Lighten up a little. You're scaring everyone away." Kirishima awkwardly bowed his head towards the people, silently apologizing for his friend's poor behavior. He was used to the explosive attitude of the blonde – pun intended. Despite his terrible manners and anger issues, Bakugou was a good friend and a superb future hero. Kirishima knew this for certain; he could always count on his friend to save the day, and do what's right. Of course, these people didn't know that. And, well, it still didn't excuse Bakugou's actions.

"I don't give a damn. Let them build some stupid sandcastles away from here, for all I care." Bakugou said dismissively, arms crossed over his toned chest. He didn't look too happy. "That means less annoying noise."

The redhead sighed. "That's… You're not wrong, but it's not right either. Just take it easy, alright? We're supposed to have fun on our day off."

"Then why drag me outside?! It's too damn hot!"

Well, because otherwise, he wouldn't socialize. But Kirishima wasn't going to say that. He didn't have a death wish.

The two heroes-in-training walked through the sand, passing the civilians by as they searched for a more secluded spot. That was probably for the best, considering Bakugou's mood and volatile temper. Kirishima had no intention of putting innocents in the way of his friend's anger. That, and he secretly wanted some peace as well. His friend was right; this part of the beach was too rowdy for his tastes.

Some girls whistled as they made their way through the masses of towels and parasols – a handful of guys, too. Neither noticed the attention, or simply didn't care in Bakugou's case.

Speaking of which; said teen was dressed in slippers and a pair of loose swimming shorts, colored orange and black. The wild pattern suited him. His fit, toned body was exposed and drew plenty of appreciative stares. Bakugou took his training as a hero seriously. His physique was lean yet muscular, and his upper body was strong in particular. Firing explosions from his hands meant that he had to suffer quite a bit of recoil. To deal with this, Bakugou had worked hard on his shoulders. The fruits of said training were evident; the explosive teen's shoulders were noticeably striated. And his arms were decently muscular.

Kirishima received his fair share of looks, but they were often out of awe rather than simple appreciation. Standing half a head taller than his friend, the hardening hero was more akin to an amateur bodybuilder. His muscles were large and thick, though the low amount of fat on his body gave them a semi-ripped appearance. The red shorts he wore showed off his body. Kirishima maintained his impressive musculature through long, strenuous workouts in the school's gym. Standing so close to Bakugou made the difference between them as clear as day.

He was carrying two beach refrigerators, each packed with food and drinks, and a large rucksack filled with games on his wide back as they searched for a suitable spot. Then he was also balancing a parasol on his shoulder, while not showing any sign of effort or exhaustion whatsoever. Those muscles were no joke. Kirishima's arms were seriously strong, and both of his biceps measured around seventeen inches or so. Kaminari often joked that he could probably enter an amateur bodybuilding competition.

However, the spiky-haired teen held no interest in that kind of thing. He only worked out this much because of several reasons; to improve as a bruiser type hero, because he liked muscles in general, and due to his girlfriend's shared love for the hobby. That was all. No need for any silly competitions. Kirishima would only participate if his friends did, or something in that nature.

They eventually stumbled across a good place to set up camp. It was located close enough to the nearby stalls, but lacked the density and number of people that they'd seen first upon arrival. There were a bunch of rocks nearby, and a large sign announced the end of the beach. Beyond the rocks was a wild part of the beach that would be difficult to reach. It wasn't worth the effort.

"This seems to be a nice spot. What do you think, Bakubro?" Kirishima asked excitedly.

His friend's response was far more subdued. "Meh, whatever. Didn't want to come here anyway."

Good enough. The two of them immediately got to work, putting down the refrigerators and setting up the parasols. Bakugou took care of the towels that they brought along. In the meantime, Kirishima rushed back to the entrance to retrieve their chairs, muscular legs flexing as he jogged through the sand. Nearby tourists watched his defined quads contract with rapid fascination. There were some buff guys on the beach, sure, but Kirishima was definitely one of the biggest.

He quickly returned to where he'd left his buddy, carrying the comfortable chairs with ease. Occasions like these proved that working out came in handy. They didn't have to work long; preparing everything was easy when you had someone to help out, rather than doing everything on your own. Another reason why it was such a good idea to conscript Bakugou.

By the time they were done, the others finally arrived. Kirishima waved at them with a toothy smile.

"Everyone! Over here!"

"Thank you for coming here in advance, Kirishima and Bakugou. Your help is most appreciated." Iida said as he chopped the air in front of him. It was a trademark gesture for the class president.

"Yeah, thanks!"

"Thank you very much."

Kirishima chuckled. "Don't worry about it. Bakugou and I are always glad to help out. Isn't that right?"

"Tch…" Bakugou looked away, scowling fiercely. That he didn't start yelling was a vast improvement.

Their friends made themselves at home, grabbing a cold drink or choosing to sit down instead. Not everyone from class A was present, however. Only those who had offered to help out at the agency were on the island. And with today being their day off, they'd all decided to hit the beach for some good old summer vacation fun. On the boys' side there was him, Bakugou, Iida, Midoriya and Kaminari. As for the girls, there was Yaoyorozu, Uraraka, Kyoka, Kendo (who Yaoyorozu had invited), and Ashido.

When they were all comfortable, Iida and Yaoyorozu took the stage. "Alright, everyone. The past week you have all shown incredible dedication to keeping the island safe. Needless to say, you have all exceeded my expectations!"

"Indeed. We should be proud of what we've done here." The vice-president continued. She wore a large sun hat to shield herself from the sun, casting a shadow over her fitness competitor's physique, which was hugged by her two-piece bikini in all the right ways. Yaoyorozu smiled happily. "Today is all about relaxing, and having fun together. Eat and drink to your heart's content!"

"Yeah!" The gathered teenagers shouted, raising their hands into the air.

Their group drew attention from other beachgoers, but none of it was negative. Most people knew who they were and what they did for the island every day.

Some of those looks lingered a bit longer than they should have, though. But it was to be expected. Kirishima was buff, but the rest of his entourage were damn impressive in their own rights. Kaminari, Midoriya and Iida were in great shape. The blonde was the smallest of the boys, yet maintained a nicely toned physique. Iida and Midoriya were more defined in comparison. And behind those rigid muscles was some serious stamina. Kirishima remained the biggest though.

Of course, the girls received more attention than any of the guys – as they should.

Yaoyorozu and Kyoka possessed bodies that any fitness fanatic would be envious of; lean, toned, and with enhanced curves. They weren't the most muscular girls on the beach by any means, but were definitely some of the best-looking. Kyoka's developed glutes and legs were superb, and Yaoyorozu's midriff was covered in defined muscle alongside her prodigious chest. The two best friends could be described as the perfect blend between the desire to be muscular without being too big.

Uraraka and Kendo took it a step further, in comparison. They worked out regularly, and it showed. Each girl's form was packed with hard muscle. Arms that hinted at amazing strength. Thick thighs that could crush watermelons in between. Their muscular bodies had been worked hard in the gym, always pushing to greater heights. They were similar in size to the boys by now. Hell, as strong too. If Uraraka was to challenge Bakugou to an arm-wrestling match, the chances of victory would be fifty-fifty, though the brunette had made amazing progress in the past month. Maybe she had an edge over him from now on.

And last but definitely not least, the pink-skinned dancer, energetic floof, and more importantly his loving girlfriend; Mina Ashido.

While her boyfriend was the biggest of his side, so was she the buffest among her fellow girls. In fact, she was as muscular as he was, meaning that Ashido was even bigger than any of the other guys. She was the ideal image of a female bodybuilder. Her long legs were so muscular that her thighs always touched each other, and her upper body was thick without sacrificing her femininity. A narrow waist and wide hips prevented her from looking brutish. Besides, with how wide her legs and upper torso were, she possessed a real hourglass shape.

And he loved everything about her. Not just her huge, muscular body. But also how positive she remained in the face of whatever the world threw at them. Honestly, he still wasn't sure how he'd scored an amazing girl like her.

Anyway, Kirishima enjoyed spending time with his friends. He cherished such moments, and committed them to memory whenever he could. It was a far cry from how his life had been before coming to UA. Not as if he hadn't had any friends back then, yet it was safe to say that he felt closer to this lot, who he'd fought and trained together with. They were the friends with whom he smiled and shared the happiest times of his life.

And this beach trip was no exception.

They had tons of fun together. Being the planners and organizers that they were, both Iida and Yaoyorozu had planned enough activities for everyone to participate in. They started off with a sandcastle contest. The group was divided into teams of two, and then proceeded to make the best sculptures they could in half an hour. The results were… varied.

Kaminari and Kyoka ended up arguing – as usual – which meant that they didn't have enough time to create a decent sandcastle. Instead, Kyoka pushed the electricity-user literally headfirst into the sand to leave an admittedly good impression of Kaminari's face behind. They received points for improvisation but weren't going to win anytime soon. The others did a better job.

Midoriya and Uraraka made a large, impressive sandcastle; a trench filled with water included. What was the most amazing part of all, however, was the detailed replica of All Might standing on top of the tallest tower. Midoriya's precision and skills were downright scary. Never underestimate an otaku, as they said.

Kendo and Ashido ended up with an amusement park made out of sand. They'd used small twigs and pebbles to create a Ferris wheel, a small pond, roads and other attractions. The former's intellect and the latter's imagination went well together.

And then there was Bakugou and him. Kirishima rubbed the back of his head awkwardly, causing his large bicep to pop up like a ripe fruit, as they presented their creation; a demonic-looking fortress with a mini-Bakugou. When comparing their castle to Midoriya and Uraraka's, there was no doubt that a certain someone had tried to beat the green-haired teen at his own game.

The acting judges, Iida and Yaoyorozu, eventually declared the One For All and gravity users as the winners – much to Bakugou's annoyance. But hey, it was just a game. Kirishima patted him on the back, and congratulated his girlfriend on scoring second place. The saucy wink that he received in return made the contest worth it.

"This weather is great. The sea breeze cancels out the heat, and the water is so clear. We should come here more often!" Kaminari praised as soon as they took a break.

Yaoyorozu nodded in agreement. "There is much less pollution down here. Ships rarely sail through these waters, except for ferries carrying supplies that the islands needs or tourists."

"And aquatic heroes make sure that no one dumps waste in the sea. Normally that's a task left to the coast guard, but in the end it's a crime anyway, so heroes are allowed to make arrests." Midoriya added. The kind teen was sat underneath a parasol, while Uraraka massaged his shoulders. It didn't escape anyone's notice how she was sitting extremely close to her boyfriend, muscular chest almost squished against his back. Except for him, that is – Midoriya was still too dense at times. "Gang Orca once took on an entire cargo ship filled with villains on his own. They were working for a company that had paid them in secret, so that they could get rid of waste."

"That's so despicable. Polluting the ocean like that." Kendo said, muscular arms crossed over her ample chest. The martial artist's sizeable biceps bulged outwards in that pose. "It's a good thing that we've got heroes looking out for us, then."

"And in a few years, they can count on us as well! Though preferably not on the water. I don't know about you guys, but it would be pretty hard for me to fight while feeling seasick." Kaminari joked.

They all shared a laugh as Kyoka punched him in the shoulder, abs scrunched together. "Dumbass, as if anyone wants you on a boat. You'd accidentally electrocute us in a fight."

"Wouldn't be the first time…" Bakugou grumbled quietly.

More banter filled the air as they had fun together. Kirishima sat back on his towel, listening to his friends with a content smile. This was everything he'd ever hoped for. The red-haired teen couldn't have wished for more; this day was a complete success.

"Pssh, Eijiro." He blinked, turning around to face Ashido. The amazon girl held a finger over her lips to make sure he remained quiet. "There's a spot over those rocks that I want to check out real quick. Tag along, will you? I'll make it worth your time~~"

That was incentive enough for him! Kirishima nodded, to which she smiled in response. The taller teen turned to his friends; Bakugo was already trying to pick a fight with Midoriya, who tried to placate his childhood friend. Naturally, Uraraka intervened by defending her boyfriend. And as Iida tried to pull them apart, the others either watched the scene or prepared for the watermelon smashing activity. Everyone was preoccupied.

The muscular couple left the others behind unnoticed, but not before Ashido grabbed her bag, and soon enough they were on their merry way.

The two amateur bodybuilders had to crawl or jump over several rocks blocking their path. The warning sign from earlier made sense now. Not only would the lifeguard be unable to keep anyone who came out here safe, but the rocks were dangerous, too. Some kid could easily hurt themselves if they decided to wander off. Kirishima and Ashido were heroes-in-training, though. They managed to traverse the tricky path, and got past the natural obstacles.

As it turned out, there was a large clearing in between the jagged rocks. The sand was as smooth as anywhere else, and there were no rocky formations sticking out of the of the nearby boulders even provided an ample amount of shade. Kirishima figured that only the locals knew of its existence. There was only path trailing into the forest, and it was covered up by foliage.

He smiled as Ashido jogged over to the middle of the clearing, which upon closer inspection wasn't that big; about four school busses could fit in here if stacked together – and that was about it.

"See? We've got this spot all to ourselves. Perfect for a secret date." She said mischievously. The buff teen put down her bag. "An old lady from the town told me about it. Said that she used to come here with her late husband, ever since they were just kids. When I helped her with her groceries, we kinda bonded and she wanted to thank me for all the trouble. What better gift than spending time with my boyfriend, right?"

That confirmed his earlier suspicions. "Remind me to thank her, then. But if you wanted to go on another date, you should have just told me. I would have prepared something."

"Maybe I wanted to surprise you, hmm?"

She sauntered over to him, hips swaying and abs rippling. Ashido smirked as she trailed her index and middle fingers over his broad chest. He chuckled wholeheartedly. They leaned in close, kissing each other softly. It was a tender kiss compared to the more adventurous stuff they usually did.

"And I appreciate it. If anything, you always manage to catch me off-guard." He admitted.

"Someone has to keep things interesting." The beautiful vixen said slyly, rubbing her leg in between his. A soft groan escaped his lips as he felt her thick, muscular thigh slide up and down. She really knew how to push his buttons. "What's wrong? Didn't expect that either?"

"You're teasing me on purpose."

"I'm sure I don't know what you mean."

Yeah, right. He wasn't buying the nonchalant act she put on. Shaking his head in amusement, he chuckled as he put his hands on her waist and pulled her in. Once their musclebound bodies were pressed close, they kissed again; more intense this time. Being able to surprise him was one of her best qualities. Life would be dull without the pinkette's antics.

Ashido was the first to break away. She walked back to their stuff, and retrieved a large picnic blanket from her bag. Turns out she'd come prepared.

Meanwhile, Kirishima put a hand over his forehead to shield his eyes from the sun, as he looked out to the sea. The redhead actually liked the beach a lot. His family would often visit one back home, and he'd picked up the habit. Nabu Island's beaches were amazing. Last time he'd been here was during the villain attack, however, meaning he'd never had the chance to visit. This clearing was perfect and worth the long wait.

"Oi, Eijiro. Do you mind giving me a hand?"

His head turned 180 degrees, allowing him to witness the sight of a bikini-wearing Ashido lying down on the blanket. Oh, hell yeah! He thought to himself.

Ashido's back was laid bare, and she'd untied the knot of her top which exposed the sides of sizeable breasts. The girl's golden eyes shone with mischief. Next to her stood a large bottle, devoid of any brand or identification, aside from a tag that read 'sunscreen'. Kirishima thought that was a little strange. Yet it didn't stop him from rushing over to her aid.

"Anything for a strong beauty like you." He grinned, grabbing the bottle.

She smiled cutely, arching her neck as her traps bulged. "Such a charmer. Now hurry up! Otherwise I'll turn purple."

Now that would be an interesting thing to see. Nevertheless, he complied by unscrewing the bottle lid. Kirishima squeezed a large serving out of the mysterious bottle onto his hand, and then got to work.

This wasn't the first time he'd done something like that for Ashido, but he was pretty sure he'd never get tired of doing it. His hands gently rubbed the sunscreen into her skin, feeling her large muscles relax underneath his touch. Her body was truly magnificent. There were plenty of muscular girls out there – like his classmates – but none were quite as big as Ashido. She was one of the few people that could keep up with his workouts.

Kirishima massaged her upper back first. He ran his hands over her firm traps, marveling at the miniature hills made out of pure muscle. Next he rubbed the sunscreen all over her wide lats. The pink-skinned girl's upper body was wide for sure, and her striated back was proof of that, but her V taper was a work of art. Ashido's waist was narrow, making her muscles look bigger than they already were. A pleasant sigh escaped her full lips as he reached the small of her back.

"You're getting good at this." She said.

The hardening hero cracked a smile. "Practice makes perfect. And seeing as I can't keep my hands off of you, it's a win-win."

"You ass!"

Ashido giggled at his remark. Still, he wasn't a fine ass like hers. Kirishima freely put both of his hands on her butt, palming each cheek and rubbing in the sunscreen. To say that they were big would be an understatement; this was a muscular bubble butt. He was confident enough to claim that her ass had very few rivals – Mount Lady and Mirko maybe. Not only was her butt round and big, due to tons of squats and a healthy layer of fat, but it was also incredibly firm. Kirishima's fingers didn't so much sink into the supple flesh as knead it.

He moved on, but not without giving the pink booty one last appreciative glance. A nice consolation prize came in the form of her long, beefy legs. Ashido's legs had been incredible before during middle school – as expected of a dancer. Now they were pillars of strength, with deliciously thick thighs and shapely calves. Kirishima applied the sunscreen diligently, as he navigated every crevice of her striated quads and hamstrings, before repeating the process as he reached her calves.

Even her feet looked cute. Unable to resist, he tickled her which naturally startled the gorgeous teen.

"Eijiro, stop teasing me!" She pouted; her lower lip sticking out a bit.

"Sorry, sorry. Just couldn't resist."

The embarrassment on her face suddenly disappeared, as it was replaced by her trademark mischievous grin. "Well, two can play at that game. Hope you're ready for what comes next!"

She turned around faster than he could react. One moment he was staring at her ripped back, and the next he was facing her prodigious chest. Kirishima's jaw dropped. Since she'd untied her top so that he could properly rub the sunscreen in, her breasts were left as naked as the day she'd come into the world. Large, firm orbs rested on top of the muscular shelf that were Ashido's pectorals. He was seemingly hypnotized by their perfect shape and her cute nipples. It took a few moments before he could recompose himself.

"T-that's cheating…" He muttered. His complaint lacked resolve, though.

"I just want to make sure you cover all the right spots. Wouldn't want to get a sunburn, after all."

Well, how could he say no to that? Kirishima scooped up more sunscreen, and started working on her chest. He made sure to caress her capped shoulders, developed biceps and even her thick forearms. There was not an inch of skin that escaped his attention. She moaned audibly once he rubbed her chest, cheeks flushing a darker shade of pink as his palms brushed her nipples. Only because she liked it; they'd gotten past the awkward stage of their relationship a while ago.

The whole affair didn't take long, and soon enough she was completely protected by the sunscreen. Kirishima was happy to have had the opportunity to feel up her amazing, sensual body once more.

"There, all done."

Ashido stretched her legs a bit, humming. "That felt so relaxing… I got that bottle from Hatsume-chan, you know."

"Hatsume?" He rubbed his chin, remembering the name from somewhere. "That's the crazy girl from the support course, right? The one who blew up Midoriya once."

"You know about that? Ha! Uraraka was so jealous back then, because Hatsume had fallen on top of him." She giggled loudly. Always the jokester – especially when it came to other people's relationships. "That's her. Anyway, Hatsume-chan has decided to work on some non-machine support equipment alongside a friend of hers."

"And what has that to do with the sunscreen?" Kirishima tilted his head to the side; confusion written all over his face.

The answer to that question was quickly revealed though, as Ashido suddenly closed her eyes and groaned loudly. He was taken aback by the sudden change in behavior. But what really threw him off course, was how her muscles began to expand out of nowhere!

Kirishima's eyes grew to the size of saucers. The already big muscles on her frame grew larger, gaining more size and mass. Ashido's legs became thicker, and he could see the definition of her vastus muscles becoming more pronounced. They bulged outwards without showing any signs of stopping.

"It has to do with… this!" She flexed her arms; both biceps achieving new peaks.

Veins rose to the surface as the arm muscles grew. Ashido's forearms became meatier, thicker and so did her upper arms. Defined triceps hung underneath superb biceps, which were looking more and more like softballs. Kirishima was in awe of their size! She easily passed the 20 inches benchmark now. But her shoulders became rounder, too. The number of striations also increased and gave off the impression that those deltoids were pumpkins. Definitely with that kind of mass and definition.

"What the hell?!"

She giggled at the stupefied expression on his face. "Surprise! The sunscreen is actually some sort of *ugh* muscle enhancer. Hatsume asked me to test it out, and what *mhm* better way than to have a beach date – god, that feels good!"

Ashido's groans became louder as the growth settled in. Her muscular midriff developed quickly, turning the brick-like muscles into a wall of indomitable armor. Each ab was dense and firm enough to withstand even the most fiercest of blows. That, and the lines that separated her abdominals were deep enough to lose a coin in. He could imagine what that would look like if she did crunches. Ashido's obliques went through the same process; denser and more defined. The only fat that remained served to make her curvy.

Naturally, her torso grew larger in more than one way. The student's lats spread out, and her already impressive pectorals jutted out a few more inches. The latter created more cleavage, as even her breasts seemed to inflate slightly. They didn't sag in the slightest, of course. But there was no denying that she'd gone up a cup size. Add her mighty pecs to the equation, and she would need new bras to fit in. It'd be a miracle if she could still look past her chest to see her feet!

Watching was all Kirishima could do as Ashido transformed into a professional bodybuilder of the highest quality. He'd never seen a woman with such big, yet defined muscles.

"Well… That was something." She panted once the growth died down. Nevertheless, she now stood an inch taller than him and outweighed her boyfriend by a considerable margin. Ashido smirked coyly. "Don't you have anything to say, babe? Or did all the blood from your brain flow down to something else, hmm?"

Ignoring the innuendo, the red-haired teen shook his head. "Wait, timeout. Hold up. You grew! You… Wow!"

A few seconds of silence passed by. However, she quickly broke down laughing at his mess of words. Kirishima joined in, still confused but too taken aback to really care. Besides, it wasn't as if he didn't appreciate the view.

"Sorry. I should have told you beforehand, but I didn't want to spoil the surprise." His adorable, buff girlfriend explained. She sat up a little straighter, looking akin to a tank with how massive she was; definitely a heavyweight bodybuilder. "The sunscreen is a muscle enhancer that's supposed to give heroes an edge. Hatsume-chan made it, but apparently, the lotion was denied by the support department. Something about being too costly, and dangerous if fallen in the wrong hands."

"That makes sense, I guess…"

"However, she'd already made a whole batch before she got the news. And she's proud of her 'baby', so she kept the formula and an entire stock. When I told her about our trip to the island, she gave me this bottle to try out."

Kirishima nodded in understanding, glad that he was no longer being kept in the dark. Honestly, it sounded too good to be true. Thousands of people would love to get their hands on such a product. The officials of the support course must have thought the same if they declared it too dangerous. That being said, he couldn't deny that seeing his girlfriend growing buffer in front of his eyes turned him on – a lot, actually.

"I take back what I said earlier, then. Hatsume is a genius!" He said excitedly. His girlfriend was a powerhouse, and a sexy one at that!

Ashido wagged her finger. "Don't get too worked up. The muscle enhancer is temporary, so I'll be returning to normal soon."

Aww, really? But she looked so amazing!

He pouted slightly, scanning her tree-trunk legs. They'd been a work of art before, but now they were ludicrously big; capable of crushing skulls, probably. And her calves were larger than most people's thighs. He wouldn't be surprised if she could kick over a tree with those majestic muscles.

"That's a shame. I really like how big you've gotten."

"Well, I'd like to see you join me, to be honest." Ashido said, to his surprise. Wait, did she mean– "Come on! What are you waiting for? Let's give you a nice tan, too. I wanna see you grow!"

The muscular future hero grabbed the bottle, and immediately covered his chest in the cold substance. Kirishima yelped as the frosty sensation gave him shivers. Whereas he'd taken his time to appreciate, Ashido was more interested in making her buff boyfriend get huge. Her soft, strong hands rubbed the sunscreen into his broad chest, bulky arms, and beefy legs in record time.

Then she reached down into his swimming trunks.

"O-oi! Be carefu– oh…" His complaint was cut off midway, as her silky hands caressed his manhood. Damn, that felt good!

Ashido grinned slyly all the while. The beautiful vixen of an amazon made sure to cover his entire body with the muscle enhancer, which included both his crotch and ass.

And thus it began. The growth was announced by a sudden heat enveloping his body as if soaking up the sun's energy. Kirishima had never experienced anything like it before. He could almost feel his body being reshaped, muscle fibers getting torn down only to repair themselves immediately – stronger than ever. The hardening quirk user closed his eyes as he grew bigger.

His arms became bulkier; biceps gaining inch after inch until they were brimming with strength, mass, and potential. His capped deltoids expanded to the size of bowling balls, while his traps rose like muscular mountains. That this transformation was so pleasurable hadn't crossed his mind when his girlfriend had gone through the same ordeal, yet he could not deny the truth. Kirishima loved how more veins crisscrossed over his meaty forearms, all the way up to his superb biceps.

And as the chest of the red-haired teen widened considerably, he decided that this is what a man should look like; broad-chested with pecs the size of book covers. The level of striations that the thick slabs displayed was simply astounding. Funnily enough, Kirishima's nipples were now pointing downwards at a considerable angle. Still, by the time the growth lessened, the teen's torso was a fortress of dense muscle mass. He wouldn't need his quirk to shrug off the heaviest of hits; his muscles were capable enough.

Pounds after pound was added to his muscular frame, resulting in a similar build to that of Ashido. However, whereas she was the embodiment of an amazon – tall, strong and curvaceous – he was what you'd call a herculean Adonis. Kirishima stood as tall as Sato, but was much bigger than his sugary friend. Stronger too, probably. He felt so damn powerful!

*Riiiiiip*

"Huh?!"

Kirishima's cheeks flushed bright red, as he watched his trunks get torn apart for two distinct reasons. The first being his legs and glutes. By now, his limbs were incredibly packed with beef, and both his quads and hamstrings were huge. So were his glutes. He'd never considered how round or firm his ass was, although he'd heard from Ashido that she liked a guy with a muscle butt.

That being said, the second reason could be found on the opposite side of his waist; namely his crotch.

He saw with no small amount of embarrassment that Hatsume's creation had increased the size of his package, just like it had caused Ashido's breasts to expand. His cock sprang free from its confines, shaft growing longer and at least a whole inch wider. Angry veins pumped blood into his cock. Down below, his sack also became slightly enlarged. When his transformation finally ended, he was left with a monster dong you'd only find in pornos.

"Oh, me likey~~"

"M-Mina! You're not helping." He whined, still a tad flustered.

In response, she rolled her eyes playfully. "Well, if you insist… I guess I should show my appreciation since you played along with my little plan. Maybe you need some proof from me. To show just how much I like you all buffed up, hmm?"

Kirishima drew in a sharp breath as Ashido's warm palm cupped him, stimulating him with sensuous motions. Shivers of pleasure ran down his spine from his crotch as his girth grew solid in her hand, deft fingers tracing teasingly over his great length before wrapping themselves around him with a firm hold. Her touch was as soft as velvet.

He threw his head back and gasped as her hand moved up and down, pumping him at a steady rhythm, building up the pressure. His meat positively throbbed in her grasp; she could probably feel the strength in that rock-hard state, the sheer virility, making her loins ache. She looked at the manly organ hungrily, licking her lips and decided to have a taste. The tip of her tongue ran from his base to the head, making him moan in delight, and captured him in her lips.

Kirishima grit his teeth; not even in his wildest fantasies could he have ever imagined he'd be in this situation. Being pleasured by a longtime friend, who in time had become very dear to him in an intimate fashion – and intimate they had become indeed. Her mouth was making him feel things he had never experienced before. He wanted this to last forever, but the ever-increasing buildup inside him told him that would not be, so all he could do was resist for as long as he could.

His hand came to rest on her shoulder, feeling up her amazingly capped deltoid. The muscle felt firm under his grasp; fingers caressing the numerous striations.

At the height of the tension, her lips left him. He watched in frustration and disappointment, whining softly, as she drew away with a devious smirk… only for the excitement to come back tenfold as she positioned herself above his waist, pillar-like legs spread at his side as her dripping sex came into view. Kirishima's arousal spiked, watching cobblestone abs rippling as she squirmed.

Ashido only smiled at him as she descended, her expression growing hazy as the thick member pierced through her folds. Kirishima let out a guttural growl as his length was cushioned by Ashido's tight walls, wrapping themselves around him with intense ferocity. He couldn't help but throw his head back, thick traps bulging in response.

She bit her lips, tensing and arching her back as her hips moved. It started with slow, soft gyrations as she traveled up and down his shaft, his strong hands grasping her amazing buttocks to hold on and guide her movements.

Then the pace began to increase, little by little, as Kirishima joined in by thrusting his hips upwards to meet her halfway; steadily burying himself deeper into her with each thrust. Slick fluids flowed from her depths, coating him, easing the friction, allowing them to lose themselves into a carnal frenzy of pleasure. Their muscles tensed and flexed in harmony, still glistening in the sunlight.

The flesh of her butt slipped between his fingers as he tightened his grip. Kirishima's eyes were squeezed shut, his teeth gnashing together fiercely as he grunted out manly sounds. Ashido panted, lips parted and tongue only slipping out slightly, sweat running down their bodies until they were both completely wet, as though they had taken a dip into the waters. Drops of sweat cascaded down the grooves of their muscular physiques.

They could feel it coming, the pressure that built up inside them; like a glass being filled with hot liquid on the verge of spilling. Their hips slammed into each other with great intensity, chasing after the release which felt so ever so close. The world flashed white, and their bodies shivered from their mutual release. Ashido let out a soft shrill cry as her walls tightened even further around him, and Kirishima let out a long drawn-out moan as his seed shot inside her.

Both heavyweight heroes-in-training dropped down on the blanket, with Ashido landing on top of his broad chest; large breasts squished against meaty pectorals. They gasped for breath. As short as it was, that single session left them paralyzed with pleasure. Could it be a side-effect from the growth cream? Kirishima decided he didn't really care.

"Mhm, you know; I still have my tan to work on. What do you say, stud? Wanna go again?"

The pinkette flashed him her trademark grin, as she slowly began to grind her Amazonian body against his.

Well, he couldn't say no to that!