After losing her husband, 'Ayumi Shinoda' runs a boarding house alone. Despite feeling everyone's gaze drawn to her large breasts, she manages the boarding house energetically. One day, while in the toilet, she accidentally sees a boarder's erect penis and becomes aroused. Unable to bear the throbbing in her crotch, she masturbates in the toilet. However, this action is discovered by the boarder, and they end up having sex. Intoxicated by pleasure, the widow continues her relationship with the boarder. Just then, a white man knocks on the boarding house gate. 'I want to come in here. Okay?' The widow's crotch starts throbbing again...
