A psychological drama about unhealthy interpersonal relationships explained often through elaborate flashbacks. Takanako Mayuko, who grew up in an idyllic mansion with the perfect loving family, blames her childhood best friend for everything that has gone wrong in her life. While maintaining the façade of friendship, Mayuko finalizes the revenge she’s been secretly plotting for decades.
Kumiko enters university and begins dating Kenichi who has moved into the same apartment. On the first night that they try to sleep together, Kenichi cannot perform at all. Even after that, the two of them are unable to make love. However, their desire to be together because they love each other is stronger and they decide to get married. Kumiko feels a strong sense of inferiority that she cannot do something normal like this while an anguished Kenichi thinks he is “defective” and cannot make her happy. The couple gradually drifts apart.