Corpse Party

A group of high school students stayed after school to tell ghost stories. After a good scare one of them revealed that she is going to transfer school, everyone got sad but then another one told them there's a spell to make them always remember each other. Then everyone agreed to do it, each person hold a part of human-shaped paper and to pull it at the same time. One, Two, Three! They pulled it together and about to went home but soon after something like earthquake happened and all blacked out.

When they woke up they found that some of them are missing but that's not all, the school became a ruin and they couldn't get out. Then they noticed that they are not even in the same school anymore and there is something lurking in the dark school not wanting them to leave...