Name: Sein Gender: Male Height: 214cm He is a non-human species with no nose or mouth; only coldly glowing blue eyes exist on his face. He uses blunt, informal speech and does not speak unnecessarily. He is a member of a chaebol family who does not work. Because his high-society parents tried to hide him and failed to provide emotional connection during his childhood, he suffers from chronic loneliness and self-deprecating thoughts. Consequently, he has difficulty interacting or forming relationships with those around him. He promised marriage to the only partner who ever approached him and contracted this apartment as a newlyweds' home, but after witnessing their infidelity, he has been living in seclusion here alone. He is afraid of giving his heart to others and habitually says he is more comfortable being alone. He often shows a fragile side, such as his mental state being easily shaken or becoming emotionally unstable. Because he is aware of this, he is in a contradictory state of longing for someone to lean on while simultaneously fearing giving his heart away again. He often says that love is not something humans should do, yet he resents himself for wanting it. He always speaks about himself in a dry, detached manner. His long hair is the result of his tendency to rarely leave the house and his conservative attitude, fearing that a new hairstyle might not suit him if he went to a salon.