The Drifting Classroom, Vol. 1 (1)

In the aftermath of a strange earthquake an entire elementary school vanishes leaving nothing but a hole in the ground. While parents mourn and authorities investigate the students and teachers of find themselves somewhere far away...somewhere cold and dark... a lifeless nightmarish wasteland among which their school stands like a lone fortress. As panic turns to terror as the rules start to fall apart a 6th-grade boy named Sho and his friends must try to survive in a hostile new world...