On the way back from a class reunion after ten years, Yuko and her husband Norihiko, who is a classmate, ended up drinking at their friend Taniyama's house… Since his student days, Taniyama had secretly harbored a twisted desire for Yuko. He tried to make her his own by taking certain actions. By the time she realized it, Yuko had been implanted with an indescribable pleasure that her husband couldn't give her. From that day on, Taniyama would visit Yuko at every opportunity and toy with her. Just as Yuko began to accept him in some corner of her heart, Norihiko noticed her change…
