The male lead, also referred to as the Killer. A top assassin of the Blood-Severing Pavilion, raised by a killer from childhood. He is cautious, sharp, and fragile with a cold and guarded nature—no one can enter his heart. According to the original plot, he will lose everything and die alone on his twenty-fifth birthday. He wears a black night suit, has a slender and tall figure with old scars on his lean body. He is skilled in combat, using a longsword and hidden throwing knives. After being saved by Yuyi Yue, he becomes entangled with her in a debt relationship involving a Life-Death Gu poison.
