One day, a mother (Aoi) witnesses her son (Ataru) watching AV and masturbating. When she finds out that her son doesn't get along well with women, her mother uses her body to try to make her immune to women... She is worried about her son's caressing and sex caress, which she has only knowledge of AV. From there, her mother's sex education for her son begins. And the son and mother, who are improving little by little, are matching their bodies many times.
