Miyanozawa Yi, who transferred from Japan, entered an incredible class and had an incredible roommate. There was a sudden attack on the school, and when Miyanozawa Yi was in danger, his roommate and discipline committee member Ye Yu rescued him. Ze Yi, who is cheerful but actually sinister, falls in love with Ye Yu and relies on Ye Yu for his life-saving grace. The cold and emotionless Ye Yu is also observing his destiny. In the undercurrent of the school, the powerful and mysterious roommate, the strange student council president, and what secrets are hidden.