Hiroshi and Yuka have known each other for a while, and he often goes to her house to play. Eric was Yuka's mother and she raised Yuka alone since childhood. Being a single mother, I have been in love for a long time. She was jealous when she saw her happy daughter with her boyfriend. Hiroshi had a part -time job when he was a student, helping him to have a robust body. Eri was fascinated by his body, so what she did was very wrong ... It was seducing her daughter's boyfriend! Hiroshi also secretly admired Eri's body, so when she was seduced, he quickly confessed and started their abuse relationship ...