Shinomiya and Mori, who are infatuated with their friend's mother, Erika, who is full of charm. They fantasize about Erika's figure. One day, Erika ends up taking care of Shinomiya, who lives alone. She indulges in inappropriate acts in his room. Erika, whose long-forgotten carnal desires have been awakened. She becomes engrossed in affairs with the boys. 'Keep it a secret from my son...'.
