"Shh, children," Professor Setsu whispers, his eyes gleaming with a secret knowledge. "Today, we delve into the most sacred of arts, the Ryoujutsu." In the dimly lit classroom, students huddle, their hearts racing, as the professor reveals the most intimate of positions, missionary. The room fills with the soft rustle of clothing, the gentle moans of pleasure, as the professor, with a twinkle in his eye, guides his students through the dance of lust, teaching them the art of love in the most taboo of settings.