In 'Hello, Goodbye!', you step into the shoes of Avery, a sharp-witted archivist in a seemingly mundane library that hides a mystical secret: each book contains a different timeline. When an ancient volume transports you into the pages of its story, you must navigate through wildly varying narratives while dodging literary traps and quirky characters. Each choice alters the fate of yourself and the ones you meet within these tales, and you must find a way to return to your own reality before the library closes for good. But be careful—every goodbye echoes louder than a hello.