In the third installment of Natsume Yuujinchou, Takashi Natsume continues his journey as a boy with the unique gift of yokai sight, a trait that has alienated him from society. Inheriting his grandmother's 'Book of Friends,' he embarks on a quest alongside Nyanko-sensei to free the yokai bound within. Despite finding solace with the Fujiwara family and forging friendships at school, Natsume is unaware of the looming trouble that awaits him, ready to entangle him in new and unexpected challenges.