Izuku Mugen, formally Yagi never had a happy life. His father, Hisashi Midoriya, died before he was born. His mother, Inko(Xtreme) married Toshinori Yagi(All Might) and had a daughter called Izumi. He smiled with his sister, but that was until they reach 4. Izumi had her mother Quirk, while he was quikless. His mother, step father, his sister, along with her friends(1A) started to bully him. The only ones who care for him were Enji, Rei, Fuyumi, Touya, Natsuo, Shota, Emi, Gran Torino, Recovery Girl, Hizashi Yamada, Nighteye, Nemuri and 1A parents.
One day he couldn't taken anymore and run away from his tormentors, but got kidnapped by Doctor Eggman at the age of 12. For 2 years he experimented on Izuku, turning him into a weapon. Izuku managed to escape, but didn't kill Eggman. He forgive him after he learn why he becomes like this.
Now, Izuku Mugen became The Vigiliante Infinite and unleashed his power on Villains and fake Heroes that are only for money and fame.All Rights Reserved