One day, Kudo finds a strange couple, a boy who looks like a student and a girl who wears erotic clothes, on the train. It seems the girl is groping his body. He finally ejaculates and he is taken out of the train by her.... Several days later, Kudo sees the girl at the gym. He looks over her identity and finds she is a wife of his boss, who left for his new post without his family. Kudo is happy to know that and decides to pick her up as his next target girl....