After her divorce, Akina lives with her son Shuichi. As Shuichi grows older, he starts to take an interest in sex, but due to the influence of their single-parent household, he becomes interested in older women. One day, Akina catches Shuichi masturbating while watching incest DVDs. Shocked and berated by Akina, Shuichi runs away from home... Days later, when Shuichi returns home, Akina invites him to take a bath. Touched by Shuichi's barehearted confession of love for his mother, Akina...
