The mysterious button suddenly appeared out of nowhere, and there weren't any signs or instructions warning that it shouldn’t ever be pushed. Although it could be some type of trap pushing it might be the beginning of something new and exciting. Various members of Re:Zero, Overlord, Konosuba, and The Saga of Tanya the Evil will soon find out when they are all transported from their world to another one and find themselves stuck in a school classroom where they create chaos.
