Mother and son Relationship with son who can't return anymore Emi Toda

Emi Toda plays a mother who is struggling financially after her husband leaves her. She resorts to prostitution to support herself and her son, Takuya. However, things take a dark turn when Takuya discovers his mother's profession and becomes involved in an incestuous relationship with her, engaging in explicit acts including oral sex and creampie. This taboo and disturbing scenario unfolds as they navigate their complicated emotions and circumstances.