It's been six months since his father left home to be with another woman. Yusuke is heartbroken to see his mother Miyako forcing Kokoro to act cheerful so as not to worry her. How can he cheer up his mother? Yusuke is troubled, but when he sees Miyako sobbing after masturbating, he makes a decision. "I'll take my place as my father." Yusuke embraces and caresses Miyako as a man. Miyako is confused, but when she realizes that Yusuke is serious, she eases up on her resistance.