You're My Hero // Villain Deku AU

After the tragic death of his mother in a villain attack, six-year old Izuku Midoriya is left for dead, homeless and starved on the cold streets of Musutafu, Japan. The shock from discovering a hidden quirk leaves him not only physically broken, but mentally as well. Shunned by heroes and civilization, Izuku is left to fend for himself. Just as he nears his last breath, the suffering six-year old boy is saved by none other than Chisaki Kai.
Izuku grows up in the yakuza compound, raised by the only father figure he's ever had, Overhaul. As they spend more and more time together, training and developing Izuku's new quirk, Chisaki's frozen heart starts to thaw for Izuku, eventually beginning to see him as a son. They grow to become more like family, healing each other's wounds little-by-little. Together, Izuku Midoriya and Kai Chisaki would change the world, eliminating the disgusting era of "quirks".
After all, there was nothing Chisaki wouldn't do to protect his son, and there was nothing Izuku wouldn't do for his father, the man who saved him. After all, when everyone had abandoned him, Chisaki was the only person in the world who had stopped to help. No matter how many people feared him, to Izuku, his dad would always be his Hero.

Credit to whoever made the art I used for the cover. :)