Misako, my mother's best friend, has a stunning face, a flawless slender body, and a genuinely kind personality. To Ryota, she has always seemed completely out of reach. He cannot stop fantasizing about having such an elegant woman as his girlfriend and finally starts masturbating to thoughts of her. Misako has already noticed that he sees her sexually, and charmed by his shy innocence, she decides to teach the adult young man everything about a woman's body.