Nono Yuki is forced to live with her father-in-law, Yoshihisa. As he begins to see the image of his late wife in her, his feelings grow stronger each day. One day, Nono returns home from shopping and catches Yoshihisa masturbating while wearing lingerie. Shocked and confused, she struggles to respond—yet Yoshihisa gradually starts pursuing a physical relationship with her. As their bond becomes increasingly complicated, Nono must confront the growing conflict between her heart and body. The story unfolds with intense emotional and physical tension, revealing both a forbidden connection and inevitable clashes between them.