First-class binder. According to the contents of the Ruins Library, Roland, the character in the game Ruins Library, calls himself the bottom nine-order terminator. In fact, it was originally one of the twelve closers of Charles Office, the first-order closers. Ruins Library is a card strategy game produced and distributed by ProjectMoon. On the ruins, a force called "library" is quietly rising. Players will witness the joys and sorrows of the city from the perspective of the library, meet guests with different styles, and complete a unique "book of wisdom" in the process of library growth.