Take the Dormitory to Clear Customs

One day I woke up to find it was pitch black and wildly loud outside, but I didn't expect a scream to be the prelude to the end of the school. The school seems to be surrounded by a barrier. People outside can't get out, people inside can't get in, and monsters are running rampant. A doomsday escape begins. I worked hard to drive away monsters with my roommates, but what I got was that I was transported to other places again and again, deserts, hotels, ice and snow world... Different scenes, different characters... All these efforts are just to find the way back...