An ancient, strange golden library filled with countless books.
Zero is rescued from the brink of death and brought to this library. He thinks it's a fresh start, but it turns out to be a whole new life.
Zero: “There are so many books here.”
Old man: “Every single book here represents a world, kid.”
Zero: “So we're supposed to protect world peace?”
Old man: “No, we're supposed to keep the worlds running as they should.”
At last, the old man's time is up, and Zero takes over the librarian's token.
The first world Zero must visit is one inhabited by man-eating demons…