The boy that Renko Kitamura, who attends Shueigaoka Prefectural High School, likes is Shinya, the boyfriend of her best friend Yumiko. Renko has liked Shinya since they were in middle school, but he loses the chance to change from being her friend to her lover, and before he knows it, Yumiko and Shinya are dating. One day, Renko accidentally met Jin, a 21-year-old hairdresser. However, Jin has a girlfriend named Mami who died a year ago...