Akane was left lonely after her husband moved out, and found herself secretly pleasuring her mature body alone. However, her son Tohru accidentally discovers her in the act. Overcome with emotion, Tohru passionately kisses his mother, wanting to comfort her physically. Despite her maternal feelings, Akane cannot bring herself to reject her son's advances. Having tasted his mother's body, Tohru can't control his desire, while Akane hopes this will be a one-time incident. Yet Tohru's emotions continue to grow, leading to a shocking, forbidden relationship between mother and son.