Shizuka's son, Shinichi, had an uncontrollable libido and was always masturbating. In his room, AV and Onahoru were scattered and he was indulged in masturbation if he had time. Shizuka's neighbor "Obana Non" also has a strong sexual desire, and because of her sexual desire, she is dumped by a friend. Even if he tries to have sex on the phone, he refuses, and he has a strong libido that makes him masturbate. Strangely, the strongest spear and shield end up adjacent to each other as if they were attracted to each other.
