Haruka Miyama is a charming and sweet married woman who considers Hiro-kun, the son of her best friend, as a member of her family. However, things soon become complicated when Hiro confesses his love and seduces Haruka while her husband is away on a business trip. Although she realizes that her actions are wrong, she tries to reject his feelings without hurting him, but in the end she gives in to temptation and gets fucked hard by Hiro.