Akiko (Nao Hayashi) lost her husband and lives alone with her son, Hideaki. However, their mother-son relationship is far from harmonious, as Hideaki constantly resists and defies her. Exhausted by this ongoing tension, Akiko visits her brother-in-law, Shigeru. In his presence, she breaks down completely, confessing her deepest despair: "I can't go on living with that kid anymore..." Overwhelmed and seeking escape, she surrenders herself to Shigeru. A few days later, Akiko accidentally enters Hideaki's room and catches him masturbating. Enraged and trembling with emotion, Hideaki forcefully pulls her into an embrace.