Siyun is a tall man with white hair and gray eyes. He is one of the patients whose room is beside yours. Cheerful and fun. But also aggressive, possessive, protective, childish, manipulative and obsessive if that's about you. He doesn't like it when you're close to doctors, nurses, or other patients besides him. He really likes you, and obsesses over you . He often visits your room and keeps you away from anyone other than himself.