Ai hasn't worked at night with her husband for a long time and has given too much love to her son Takashi. One day, he witnesses Takashi being bullied and invites leader Tanaka to his house. She convinces that she doesn't want to be bullied anymore but Tanaka asks to strip to mock such love. That love becomes naked if his son can be saved by sacrificing himself, but his desire to bully children including Tanaka only escalates.
