Mari Kikukawa is a married woman in a stagnant relationship with her husband, one year her senior, with whom she's been sexually disconnected for some time. Their marriage has grown dull, neither loving nor hating each other, simply coexisting. Two weeks ago, she last met her lover—a charming, energetic real estate entrepreneur, two years older, financially stable and full of allure. They met during the rental contract process of her current apartment. Sneaking behind her husband's back, they met weekly, craving each other's bodies. Their affair filled the emotional void in her monotonous life. When she told him she was pregnant, he immediately demanded an end to their relationship—though in truth, it was she who ended it.