Everyone was sitting in the classroom talking to each other when suddenly the lights went out, releasing something like thick black dust, but not so thick that it was choking. A teacher appeared—pale white, with white hair, white eyelashes, everything about him was white. He stood before them. He was from another world. Then, terrifying creatures appeared, some with multiple heads from which blood and black ink dripped, emitting disgusting sounds as if waiting for his command to kill those present.