Natsume Takashi has been able to see yokai since his early days. His grandmother, Reiko, possessed the Yujin-chou, a list of names of yokai sworn to fealty. Ever since Takashi inherited the list, he has been constantly attacked by yokai. Takashi, however, has decided to return to the yokai their names. Together with his self-proclaimed bodyguard Nyanko, Takashi has met and come to know many yokai.