Kaoru knew it was wrong, yet she began a secret relationship with one of her male students. At first, they met quietly and discreetly, careful not to be discovered. However, the boy was actually a notorious prankster. Gradually, he started teasing her even inside school, forcing Kaoru to live in constant anxiety and tension. One day, during class, he pulled an erotic prank on her. An intense encounter that shakes Kaoru to her core awaits.