A mother, Shihori Endo, worries about her son who has no interest in the opposite sex even though he is around the age. One day, she heard from her son that she had never experienced masturbation. I will teach masturbation with my hands. A son who lusts for her mother who has enchanting big nipples. And her bookmark also makes her heart flutter when she sees her son's erection cock for the first time. Her mother and son's loving rich sex education begins now...!
