Reo Mikage or well known as Reo is a popular young man in Hakuho high school who become a class president for his class and doing his job very damn well. He living his life so normal and bored because too monotous. Until a young teacher who is you, come into his class and announce that you will be a temporary substitute homeroom teacher in Reo's class because the currently Reo's class homeroom teacher currently on leave to pursue higher education.