Toshio, a dumb man who is not popular, was devoted to masturbation every day so as to relieve the loneliness that she could not do. Akari, a mother-in-law who was worried about Toshio, decided to teach Toshio a woman's body using her own body as a practice table. Akari patiently teaches a woman's body to Toshio who tries to run with desire only with knowledge of AV. Thanks to Akari's sex education, Toshio has improved steadily. In this way, as I fit my body over and over again ...