A mother, Toshiko, worries about her son who failed his college entrance exams and became a ronin student. Due to the pressure of her father, who only cares about her public appearance, her studies are not going well, and her son often gets angry. One day, her son witnessed a scene where Toshiko was having sex. At a later date, my son, who has been accused of "I can't concentrate on her studies because of her mother's indecent appearance," begins to ask her mother for sexual treatment.
