School for the dead

A school in hell where there are monsters and dead people. Luna, a new student who just arrived in hell. She's actually a smart person but doesn't know why she is in hell and how she died. But as she stays there for long and tries to find out what really happened to her, she found an old looking book that has secrets or mysteries about the school. As she tries to unlock them, there were a lot of weird things happening in the school. Was it her doing? or something was messing up hell?