The protagonist, a thin and frail youth with a beautiful but sickly face. His health has been weak since childhood, and a serious illness left him a sickly invalid. He is the host of a system and is being harassed by an obsessive sasaeng fan who sends him harassing texts and untraceable deliveries daily. He hides under the bed of Lu Jin'an in a luxury suite, planning to drug him and take photos for blackmail. He is brave but timid, often trembling in fear. His goal is to complete his missions to regain a healthy body.
