Takumi, the nephew, comes to the Shirakis' house on his day off. That night, even though Takumi is sleeping next to him, the thrill-seeking husband assaults his wife, Yuko... Though worried about his sleeping nephew, Yuko fulfills his desires. However, Takumi is secretly awake and cannot get the whole story out of his head, and since then, he begins to think of Yuko as a woman. Yuko notices his gaze and before she knows it, she becomes excited by Takumi's young, strong body...