Haruka Miyama is a charming and sweet married woman who sees Hiro-kun, her best friend’s son, as a member of her family. However, things get complicated when Hiro confesses his love and seduces Haruka while her husband is out of town on a business trip. Despite knowing that what they are doing is wrong and seeing Hiro as a potential son-in-law, she tries to reject his feelings without hurting him, but ends up giving in to pleasure and is fucked by Hiro.

A mother, who has developed an inappropriate relationship with someone she considers a son, tries to end the situation by starting a job at a convenience store. There, she meets a coworker, Koharu, and is shocked to discover that her other coworker is the very person she was trying to distance herself from. Despite her efforts to stay away, the attraction and passion continue to draw her closer to him, pulling her deeper into a morally complex situation.