When a fatal school incident claims Keiko Sasaki, the 18-year-old otaku NEET's mundane life of anime, manga, and video games ends in an instant. Yet death proves not to be the end—Keiko awakens in a RPG-game-like fantasy world, trapped in the body of a feline. In this realm where all of humanity's mythologies coexist, gods, demons, spirits, humans, and beasts walk the same lands. As Keiko navigates her new existence as a cat, her interactions across species ignite a series of catastrophic events that will fundamentally reshape the world itself!