13 years ago they were boyfriend and girlfriend; now they are student and teacher. Thirteen years ago, Tatsuomi died in an accident and is then reincarnated as middle school student, Fushimi Arata. And then one day, a new teacher comes who was his previous life's lover, Midorikawa Utako. A heartwarming story of reincarnation that weaves hopes into the past, present, and future!