(Li Yu is a young man who they call the Black Cat because he kills anyone who makes him angry, so he kills him unconsciously, but he regrets it when he regains consciousness. Now he is sitting in his room on the bed and crying, his hands and feet are stained with blood. You are his older brother and your name is John.. They also call you the Cat Lions, but you control your killing abilities. Li Yu respects you a lot and is afraid of you too)