In his final battle between him and shigaraki, Izuku midoriya aka Deku finds himself reincarnated into the world of Mato. Watch him as lives as the only boy with OP powers in a world where only women can have superpowers. Note: I do not own Mato seihei no slave, My Hero Academia or the pictures and videos I use. All belong to their respective owners

This is a Demon Slayer Roleswap x Mha crossover fanfic. In this story, Nezuko Kamado went to sell charcoal instead of her brother due to an injury and when she came back, her family was murdered except for Tanjiro, who was turned into a demon. Not long after, she had to fight back against the Water Hashira, but failed. Luckily, a boy named Izuku Midoriya, a boy that trained himself to use Moon Breathing, interferes and convinces the Hashira to let him help and find a way to save Tanjiro. Now, Izuku and Nezuko are Demon Slayers in search of finding a cure for Tanjiro, and ending Muzan Kibutsuji.

Now that the traitor has been discovered, Izuku came to Kurogiri to get some info on All For One. But when a villain injects Kurogiri with the Trigger serum, along with an unknown substance that causes a quirk to go out of control, Izuku gets transported to a new world. Filled with strange creatures that seem to have multiple quirks. Now, he must find a way to get back to his world. But he won't have to do it alone.

Born Quirkless, Izuku Yagi was constantly bullied by his former friend, Katsuki Bakugou. His mother always stress eats whenever her son comes home burned and bruised, and his sister Izumi is given praise by her classmates and teachers for having such a powerful Quirk, much to the girl's chagrin as she tries to defend her brother the best she can. Izuku's only remaining childhood friends are Shoto Todoroki, Himiko Uraraka, Ochaco Uraraka, Momo Yaoyorozu, and the Tanjiro Siblings. Unfortunately, Momo, Ochaco, and the Kamado Siblings moved away from Musufatu. However, one day, while wandering around the trash filled Dagobah Beach, Izuku, Izumi, Shoto, Momo, Ochaco, the Kamado Sibling, and Toga come across a long since forgotten cave that leads them to an abandoned hideout. From there, the four and eventually a few others become the successors of the legendary Toon Force, a legendary team of heroes from the earlier days of the Quirk Era.

A man from another world. A dark, distant future. Crafted into a war machine with no higher purpose other than to shed blood. Though that was not how he started. At one time he was but a child, a child which unlike many others was not only part of a dying population but also a part of an uncaring family. To them he was no better than a slave and as his days of usefulness counted down, so did to the reasons to let him live. That day had arrived soon enough and as Izuku Yagi lay dying, soul filled with hatred, did he get another chance to "survive."

Izuku Yagi along with his twin sister, Izumi, Parents Inko and Toshionori Yagi. At age 4, he was diagnosed as quirkless, he decided to have a normal life. He had his family, Friends (Katsumi, Katsuki Bakugo and Shoto, Shoka Todoroki) being there for him but that all changed and for them as well. At Age 8, Izuku Yagi was kidnapped by Umbrella for experiments and was notified as missing. Eight years later, the years of Izuku Torture, No memories of his past, and used as a lab rat for years. He can only remember what they called him, G.T. AKA Golgotha-Tyrant. All he can remember was Pain from Umbrella Corporation. Now, the only thing he could remember is what they did to him. He was saved by William Berkin and kindly raised by him, he was hidden but he would never forget what Umbrella did to him. Two years later, he is now 18 years old and who knows maybe some good will out of this. The Story of Izuku(G.T.) goes against bigger threats, challenges, and hoping to find the truth about himself.

Izuku Midoriya. Clover Midoriya. Ricky Steel. These three were in the dorm rooms of UA when a strange portal appeared and out came a silver haired man known as Professor Ozpin, who has discovered that villains from the trio's world have somehow come to Ozpin's. Determined to make things right, Izuku, Clover, and Ricky requested to be taken to his world so they can capture the lost villains and bring them back. Of course, they need to learn everything about this world and to do that, they must enroll in Beacon. But what happens when Izuku captures the hearts of multiple girls by complete accident, yet he's shy around girls?

Izuku Midoriya previously quirkless, was offered One For All by the greatest hero, but during training he discovered the Omnitrix. Now his on the journey to be the greatest hero the Symbol of Peace and The protector of Earth. It's Hero Time!!

When Izuku was four years old, he was diagnosed as quirkless. From that moment on, society branded him as someone who would never become a hero. For years, he carried that weight-fear, disappointment, and the quiet ache of being left behind. At fifteen, everything changed. Overwhelmed by hopelessness and tired of waiting for a miracle that would never come, Izuku ran away from home. He wandered for hours, then days, until fate guided him to a hidden cave deep within the mountains. Inside, he discovered ancient markings, forgotten relics, and a presence unlike anything he had ever felt. It wasn't a quirk. It was something older-something powerful. Ki. Energy that flowed through all living beings... and it responded to him. From that moment, Izuku's real story began. The story of a quirkless boy destined to become a hero not through genetics or luck, but through willpower, training, and the strength of his own spirit.