Gakuin Makyo ~High School Crisis~

After class one day in 20XX... A huge earthquake strikes a school where a bunch of high schoolers were merely going about their daily lives. When they come to, they see that they’re no longer at school but in another world they’ve never seen before. Their school has become a maze inhabited by strange creatures they’ve never laid eyes on. Everything around them seems set on ending their lives. How exactly did this happen? How can they ever return to their own world? The students must wander their school-turned-demon-realm in search of answers.