Gyakuten Shoukan: Urasettei made Shiritsukushita Isekai ni Gakkou Goto Shoukan Sarete

Hero and Kashiwagi Minato had been unfairly bullied in class, crap every day Was overkill. One day, the high school he attends is summoned to a different world. The monsters attacking the school building, the three months in the sky, and the mysterious emblem that emerged in the hands of 1,500 stude