Chapter 1: Graduation Night (IzuXJirou)

It was a night for celebration for the A and B hero classes. After three years of school work, dealing with the League of Villains, and some personal drama, they were finally ready to enter the next phase of their lives and officially become Pro-Heroes!

And as if with any celebration involving teenagers turned young adults, their party was chock full of boozes, courtesy of Todoroki 'borrowing' from his father's personal stash.

So the twenty-plus rookie heroes celebrated, the alcohol fueling their youthful antics, which Izuku was happy to watch from one of the rec room couches (he was one of the least drunk of the group). While there were several comedic scenes going on (An arm-wrestling competition between the physically strongest of their classes, Tokage trying and failing to do a stand-up routine, and Monoma combining quirks for a flashy show), the greenette's attention was mostly focused on the couples' antics.

Indeed, a few of the former students had hooked up over the last three years. From where he was sitting, he saw Mineta rubbing his face into Tsuantori's bosom while the blonde girl just giggled, Tokoyami and Yanagi were snuggling and whispering into each other's ear, Kaminari was sitting next to Ibara, and even Kacchan was dancing with Utsushimi.

"Come on, Izuku!" And speaking of romance, Izuku looked up and smiled when he saw a certain purple-haired woman that had taken a place in his heart for the last few years; Kyouka Jirou.

While the two had casually chatted with each other during their first year, things changed between the two after the school festival. When Izuku saw Kyouka play her heart out, the green-haired boy was enamored by her. So, he went out of his way to talk to her, the two quickly going from casual acquaintances to good friends. While Izuku didn't know it at the time, his honesty and earnestness had begun to charm Kyouka as well.

The next big major step in their developing relationship was when Kyouka decided to join Izuku in his exercise routine. The purple-haired girl was concerned that she was lacking when it came to physical strength, so she figured Izuku could help her out since he was one of the physically strongest in their year. At first, Kyouka ended up almost passing out from just the warm-up, but the purple-haired teen quickly adjusted to it. And it was during that time that Izuku learned something about himself; he had a thing for muscular girls.

Granted, during their first year, Kyouka was nowhere near as ripped as someone like Miruko. But the punk girl definitely had some tone to her, especially in her arms and legs. Which was why Izuku was so shocked when Kyouka told him that she didn't really have any confidence in her body.

According to Kyouka, she wasn't busty like Ashido or Yaoyorozu, she wasn't curvy like Tsuyu, and she wasn't cute like Uraraka or Hagakure. But Izuku was quick to say that she had her own charm to her...while also blurting out that she had the best muscle tone of the girls.

After that admittedly embarrassing half-confession, the two started dating during their first summer break. And by the time the next semester rolled around, they were officially a couple. While there was a bit of tension between them and Uraraka (who had been crushing on Izuku during their first year), the brunette girl got over it and even congratulated the two. And according to the local rumor mill AKA Hagakure, the brunette had her eyes on someone else in their class now.

And for the last two years, Izuku and Kyouka had become one of the big power couples of their year, hence why the purple-haired punk was currently sitting on the greenette's lap, the two enjoying each other's embrace.

Soon however, the two left the party and headed up to Izuku's dorm room, the young couple french-kissing as he opened the door. With a quick lift and turn, Izuku laid Kyouka on his bed, taking in her lovely form. His girlfriend had chosen a sleeveless purple shirt, a black leather skirt, and black leggings. And much to his delight, Kyouka's shirt cut off right above her stomach, showing the tight four-pack set of abs she had developed.

The young couple began to strip out of their clothing, taking in the sight of their lover. And while Kyouka wasn't as buff as her broccoli-haired boyfriend, she was still one of the more muscular girls amongst their graduating class. Her arms had a great degree of muscle, her BB-cup breasts were held up by a defined pair of pecs, and her legs were visibly muscular as well.

"You're beautiful." Izuku said, placing a kiss on Kyouka's neck, making her giggle.

"You say that every time you see me naked."

"Well, it's true." The green-haired man replied. In response, his purple-haired lover pushed him down, crawling on top of his muscular body until the two were kissing once more. After another intense round of french-kissing, the two quickly got into one of their favorite positions: 69. In this position, the lovers felt each other's abs rubbing against each other while Kyouka's muscular legs were on either side of Izuku's head as he began to lick her moist pussy, causing the punk woman to moan.

Kyouka moved her head down towards her boyfriend's erect member, giving it a few licks before wrapping her mouth around it. She could feel Izuku's moaning into her womanhood, arousing her even more and causing her to suck on him even harder.

The punk heroine was the first to cum, her love juices flowing into her boyfriend's mouth. And Izuku was soon to follow, shooting his load into Kyouka's mouth. After cleaning their mouths, the green-haired rookie placed his girlfriend on her back, looking into her eyes.

"I want you." Kyouka said, lust and love clear in her eyes.

"I want you too." Izuku replied. The two had fooled around for the past two years. And now, both were ready to go all the way. The green-haired man lined his dick up with Kyouka's womanhood, teasing her folds before slowly thrusting inside her. Soon, he felt his tip touch her hymen. And with a reassuring nod from Kyouka, Izuku fully thrust into her.

At first, Izuku needed to control himself as Kyouka adjusted to the feeling of his member inside her. Soon, the green-haired man began to move, and the pain was soon replaced by pleasure. The two lovers continued their erotic dance, Kyouka wrapping her toned legs around Izuku's waist as he continued to thrust into her.

As he fucked her, Izuku felt Kyouka's pussy tighten. He took in the sight of her. Sweat rolling off her toned body, giving her muscles a nice shine. The erotic look on her face as she moaned in pleasure. It soon became too much for Izuku as he came inside Kyouka, leading to the punk girl having her own orgasm.

Nowhere near done, Kyouka decided to take the lead, pushing Izuku on his back before moving up and down. And the feeling of her warm and tight womanhood was enough to make her boyfriend hard again. Izuku grabbed her by the waist and met her hip thrusts with his own, pushing himself deeper into Kyouka's womanhood.

"K-Kyouka…" Izuku moaned out as the purple-haired woman continued to ride him. "I-I love you!"

"I l-love you, too, Izuku!" Kyouka moaned out as her womanhood tightened around her lover's cock, her muscles flexing as she and her boyfriend achieved a simultaneous orgasm. Kyouka fell on Izuku's chest, the two embracing in post-coital bliss. They looked into each other's eyes and smiled.

"Well, that's one way to celebrate." Kyouka joked, making Izuku chuckle as he hugged her.

The two young heroes had now crossed into the threshold of adulthood. And they had no idea how crazy their love life would become in the future.

To be continued…

Author's Note: Hello to anyone who's following from Pro-Hero's Muscular Harems! Here we have the first chapter of Alternative Muscular Harems. And alongside Kyouka, here's the other girls that will be part of Izuku's alternate harem;

Tsuyu, Mt. Lady, Ryukyu and Nejire!

I also got a poll up for the five girls of Kirishima's alternate harem!

Cast your votes and have a nice day!