Worried about her son who has become a recluse, mother Ayako blames herself. He accuses her of being the reason he's mocked by friends and girls due to the strict curfew she imposed. With her husband offering no support, Ayako gradually becomes mentally overwhelmed. One day, her son forcefully declares, "It's your fault I can't get a girlfriend! You compensate by handling my sexual needs!" Yielding to his words, Ayako gives him a blowjob, but it doesn't end there. As her son's emotions and desires deepen, Ayako struggles with her maternal conflict and guilt, driving the story into increasingly complex and twisted territory.