They are the heirs of four major families. They are top students in school, but outside of school they are a group of bad boys. He is the heir to the Cui family, the head of the four major families, and the magical prince in everyone's hearts. She - the girl who has always lived alone is a complete little witch. She was rescued by him unintentionally. He saved her without knowing who she was or even what she looked like. She recognized him by chance and fell in love with him, but her three confessions were ruthlessly rejected by him. Later, she became brother and sister with him... Accidentally discovered his other identity, and she used this to threaten him to be her boyfriend, otherwise she would reveal his other unknown identity...