Even after marriage, Yukari continues to secretly meet her former lover, her brother-in-law Takashi. One day, Takashi, who is struggling with debt, asks Yukari to take care of her nephew, Fumiya, and she agrees. However, once Fumiya arrives, her husband's attitude changes drastically—pressuring Yukari in the room next to her nephew's and hurling cruel words at Fumiya. That night, overcome with loneliness, Fumiya suffers in agony, and Yukari gently draws close to comfort him. But this kindness brings a great tragedy upon Yukari herself...