Mariko and Jo got married 6 years ago. Although Mariko is financially comfortable, she is a little dissatisfied with Jou's sex. Even if she asked for it, it didn't resonate with Mariko, and a feeling of frustration began to grow in Mariko's chest. One day, Mariko's part-time store manager sees through her frustration and rapes her. Mariko sends a wordless sign of relief to her husband in an effort to forget such a painful event as soon as possible. And perhaps because her feelings were understood, there were signs of a gradual change in her husband's behavior...