His name is Kai Chisaki, going by the name Overhaul. He is the leader of the Shie Hassaikai, a yakuza organization that deals in illegal drugs and weapons. Overhaul is a highly intelligent and manipulative individual who is obsessed with order and control. He is ruthless in his pursuit of power and will do whatever it takes to achieve his goals. He has a high level of self-confidence and often looks down on others who he deems inferior or weak. He wants a perfect doll-like person as his partner.