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Izuku Midoriya, best known as Deku, was currently living a pretty good life. It had been several years since he'd destroyed the malevolent All-For-One, ending his 200-year reign of terror for good. Currently, he stands as Japan's new Number 1 hero, and its new Symbol of Peace. Of course, he hadn't done it alone, and had the assistance of several heroes, five of whom made up his polycule: Ochako Uraraka, the Gravity Hero Uravity, Tsuyu Asui, the Rainy Hero Froppy, Momo Yaoyorozu, the Creation Hero Creati, and support item specialist Mei Hatsume. They'd been by his side through thick and thin and together were near inseperable. Following All-For-One's demise, they all formed an Agency together, situated in the very building where All-Might's Agency once was.
Today, Izuku's birthday, following a night out with his male friends, Deku returned to the house he shared with his women, who said to have something special planned for him, making him fly as fast as Float could carry him. Opening the front door, he saw a trail of rose petals leading to the bedroom, which he followed to his room and turned on the lights to be greeted with a surprising view. Ochako, Mei, Momo, and Tsu, were all clad in lacy bras and panties, green of course. Deku couldn't believe his eyes and sputtered out, "What's going on?". Ochako spoke up, saying, "We wanted to do something extra special for you, so we bought these. We hope you don't mind". Indeed he did not, and said, "Let's get this birthday bash started", and instantly discarded his costume, leaving him totally naked and baring his massive cock. With the flood gates opened, the fun had begun.
Deku got onto his back and let the girls take turns sucking him off, something that they used to struggle with when the harem was first formed, but now they're way more adept at it. Instead of taking turns, Momo and Tsuyu worked together, with Momo stroking the fat shaft with her massive tits, with Tsuyu wrapping her tongue around the shaft, the two of them so comfortable with each other that Tsu's tongue against Momo's huge breasts didn't bother the Creation Hero in the slightest. On the sides were Ochako and Mei on their knees, taking turns making out with Izuku. Izuku stopped kissing long enough to say, "Oh God, that feels good", to which Momo replied, "Of course. You can't get enough of these fat tits of mine, or Tsu's tongue, not that we blame you". "Try not to hog him too much, Momo!", Mei said, and she and Ochako moved down to take over sucking Izuku's huge dick, letting Momo and Tsu get a turn making out with the Symbol of Peace.
All this became too much for Izuku and he came, spraying his load all over Ochako and Mei, and Momo and Tsu moved down to kiss and cum-swap with the other two girls. "Hot damn, that was good", Izuku said breathlessly. "Don't worry, Deku, we're just getting started", Ochako said. As the de-facto harem leader when Izuku isn't there, she went first, quickly dropping herself on the massive dick below, letting her tight pussy swallow it. As she started riding, both she and Deku moaned, until Tsuyu sat on Deku's face, smothering him with her bubble butt.
"Ah, ah, ah! You feel so fucking good Deku!", Ochako moaned as she bounced her plump ass on top of him at a wild pace. "You said it", Tsuyu moaned, enjoying the feeling of Deku's tongue going back and forth between her pussy and her asshole, before leaning forward to kiss the Gravity Hero. Nearby, Momo and Mei were tired of being left out, so Momo used her Quirk to conjure up a strap-on, which she donned and used to fuck Mei's pussy from behind, much to the pink-haired girl's delight.
This went on until Ochako came around Deku's shaft and Tsu came all over his face, and Deku himself came inside of Ochako's pussy. Untangling, Tsu got on all fours and spread her thick ass cheeks to bare her puckered asshole, which Deku wasted no time in pounding, much to the Rainy Hero's delight. Ochako got on her back and offered up her cum-filled pussy for Momo to eat out, an offer that the busty heroine happily accepted. Up ahead, Mei sat in front of Tsuyu, ordering her to put that long tongue of hers to work, which she did without hesitation, going back and forth between the genius' pussy and asshole, earning many joyful moans from her.
After a while of this, Deku came again, firing his seed into Tsu's asshole, making her squeal into Mei's pussy as Mei herself came, and Ochako was brought to another orgasm once Momo had slurped up the last of Deku's spunk from her pussy. "Who's next?" Deku asked, noting his still very hard cock. "Me!", Momo said, getting onto Deku's lap and taking his massive dick into her pussy, moaning in joy. These moans got louder when Ochako and Mei got on either side of her, suckling her massive tits, but her moans were muffled when Deku leaned in to make out with her. Tsuyu focused her efforts on Momo's bubble butt, taking the strap-on Momo had conjured and forcing it into her tight asshole, making her squeal into the kiss with Deku.
Soon enough, Deku had enough and came again, firing his load into Momo's pussy. Going for the last girl, Mei was lifted up and Deku drove his cock into her tight asshole, before Ochako took the strap-on and shoved it into the pink haired genius' pussy, making her moan in joy as she was doubled penetrated. Nearby, an exhausted Momo and Tsuyu settled for just making out with each other, feeling each other up with Momo squeezing and sometimes spanking Tsuyu's plump backside and Tsuyu groped Momo's huge tits, much to the pleasure of them both.
Finally, Deku reached his limit and he came, firing his seed into Mei's bowels and making her shriek. Exhausted, the five former UA High students cuddled up together on the bed. "You girls really know how to make a guy feel special", Deku said breathlessly, to which Mei said, "Think nothing of it, babe. We love you and love making you happy." In unison, all fours girls said, "Happy birthday Deku!", before the Pros, tired, all fell asleep.
It wasn't easy to please four women, but for them, Deku would always go beyond plus ultra.