Hajime's classmate Suzu has a blank look on her face and is in a long-distance relationship with her boyfriend, a university student. One day during winter school, Hajime is invited by Suzu to have sex in the club room. "I'm glad you're not a virgin. It would be troublesome if you got serious, wouldn't it?" From then on, throughout winter school, Suzu and Hajime have sex in the bathroom and the nurse's office. A winter break that can never be returned to, a bittersweet memory of love.