Li tianchen is a 19 years old guy with the ability to posess persons by physical touch (He committed many homicides using his ability while partnered with Qian Jin.). His mute young sister (Li tianxi (Sishi), the one he most loves, he has an accomplice named Qian Jin, who gave him orders to commit homicides by possessing other's bodies. He is brash and abrasive but has a caring side that is evident in how protective he is of his mute sister. Also psychopathic. 