Library

"I don't know anything about magic or religion or mysteries. Study, even though I just tore apart a demon-looking monster thing, but I'm really just an ordinary elementary school teacher. Already. "

An ordinary student discovered a new world because of an invitation. A collection that cannot be disclosed to the world, a mysterious notebook, a group of unfathomable forces, and an experiment that can change the world. "Cell", a creation that can bring benefits to mankind