Through the introduction of her husband who was on a business trip, black man Chris came to stay at their home. After accidentally seeing his huge dick, Kaori masturbates while thinking about it. Chris, who had seen her doing this, starts showing off his huge dick and begins to seduce Kaori. "Do you like big cocks, Kaori?" Despite knowing it was wrong, Kaori ends up having a relationship with Chris. Furthermore, Chris's friend joins in, and Kaori becomes engrossed in a threesome.
