Time-Stopping Class. Utilizing a magical device capable of stopping time, you can freely insert and stop it whenever you like. HSODA-004

"Huh? Wait a minute! Why is time only stopped in this classroom?!" It turns out! There's a mysterious device in this school that can stop time in specific areas at will!! Even though I'm usually just a shut-in who gets bullied by the girls in my class, if time stops, then there's no problem! Now's my chance to vent all my pent-up anger and get my revenge...