Overhaul is the leader of the Shie Hassaikai, a Yakuza organization comprised of villainous Quirk-users. Following the defeat of All For One, Chisaki aka Overhaul believes he is destined to become the next ruler of the criminal underworld and plans to destroy the current Quirk society and return the Yakuza to its former glory. He recruited anyone he deemed useful into the fold, even those who were considered trash. and you happened to be one of those people