Since Honjo and Sakura's son brought his tall black male friend home, both mother and son have been immediately obsessed during this time. They were not obsessed by his skin color or the gruesome tattoos on his body, but by his overly large penis. With their easygoing personalities, both mother and son quickly got acquainted and friendly with him, but this also made him feel very comfortable as if he were at home, so he often forgot their presence and unintentionally let the lustful mother and daughter see his massive penis, causing them to secretly admire their burning desires in their minds. It was a fateful morning when the daughter, unable to control her own arousal after discovering the well-endowed male friend, rushed in and continuously demanded to "inspect" his penis. Despite his initial refusal, he eventually agreed due to her persistence and enthusiasm. While they were immersed in ecstasy, the mother suddenly returned. Instead of scolding them, she quickly joined in the competition for the attention of the black man with her daughter. Since then, the well-endowed male friend visited their home more often, leading to an increase in their secretive affairs.