Since losing her husband, Kana has been raising her son Tetsuhei alone. One day, Tetsuhei tells her he has a girlfriend, and although she is happy, she soon discovers SM goods in his room. When asked why, it turns out he was influenced by extreme adult videos. To prevent her son from learning more incorrect sexual knowledge, Kana begins to educate him about sex using her own body. Sex without relying on force or tools...a beautiful mother teaches him everything from how to kiss, the workings of female genitalia, to the basics of sex.
