OBA-415 Yuko Matsuda as a step aunt who rediscovers her femininity with her nephew

Yuko Matsuda plays a step aunt who, after 20 years of marriage and growing distance from her husband, loses her confidence as a woman. At a local reunion she stays at her brother's house for two nights, gets drunk, and exposes herself to her nephew Sho. She approaches him with hot anger, hesitating over whether it's okay for an aunt like her, then forgets her pleasure after a long absence and regains her joy as a woman.