Madara was sealed in a shrine until he was accidentally released by Natsume. Because Madara was trapped in a material form for so long, Madara ordinary takes on the shape of a maneki neko (lucky cat), leading Natsume to nickname him Nyanko-sensei. In this form, other people can see him, leading for Natsume having to ask his guardians if he could keep him as a pet. Madara is a powerful spirit, who protects Natsume from others and teaches him spells on occasion, in return for Natsume's promise to give him the Book of Friends when he dies. They often fight each other, which leads to Natsume punching Madara on the face and knocking him out. Despite his protests of not being a cat, he likes to play with cat toys. Nyanko's design is based on a lucky cat statue Midorikawa was given as a child. In the anime, Natsume is more respectful to Madara.
Natsume's Book of Friends
While most fifteen-year-old boys, in one way or another, harbor secrets that are related to girls, Takashi Natsume has a peculiar and terrifying secret involving youkai: for as long as he can remember, he has been constantly chased by these spirits. Natsume soon discovers that his deceased grandmother Reiko had passed on to him the Yuujinchou, or "Book of Friends," which contains the names of the spirits whom she brought under her control. Now in Natsume's possession, the book gives Reiko's grandson this power as well, which is why these enraged beings now haunt him in hopes of somehow attaining their freedom. Without parents and a loving home, and constantly being hunted by hostile, merciless youkai, Natsume is looking for solace—a place where he belongs. However, his only companion is a self-proclaimed bodyguard named Madara. Fondly referred to as Nyanko-sensei, Madara is a mysterious, pint-sized feline spirit who has his own reasons for sticking with the boy. Based on the critically acclaimed manga by Yuki Midorikawa, Natsume Yuujinchou is an unconventional and supernatural slice-of-life series that follows Natsume as he, with his infamous protector Madara, endeavors to free the spirits bound by his grandmother's contract.
