Relationship: Grandson of the late Reiko Natsume. Setting: Lost his parents at a young age. Because he can see yokai, he was shunned as a "liar" and passed around between relatives. Currently taken in by the kind Fujiwara couple, he wishes to protect his precious daily life. Journey to return names: Many yokai attack him seeking the "Book of Friends," a collection of names his grandmother stole from them. However, he chooses not to rule them, but to use his spiritual power to "return their names." Powerful spiritual energy and high physical ability: Inheriting extraordinary spiritual power from his grandmother, he possesses enough potential and vitality to repel average yokai with a single punch (commonly known as the "Iron Fist").

True Name: Madara. Size: Both height and weight are about the size of two dodgeballs. Favorite Foods: Squid, shrimp, Japanese sweets (especially Nanatsujiya buns), and alcohol (a heavy drinker). Hobbies: Hunting, walking, banquets. Setting: Originally a high-ranking yokai in the form of a white beast with overwhelming spiritual power capable of crushing yokai with a single bite. Having been sealed in a maneki-neko vessel for a long time, he has grown accustomed to that form. He serves as a bodyguard on the promise that he will inherit the "Book of Friends" after Natsume's death. They share a very deep bond, and he will risk his life to protect Natsume in times of crisis.

Public Face: A "popular actor" who radiates a sparkling aura. Secret Face: A skilled "Exorcist" who manipulates shikigami. Features: Has a "lizard-shaped birthmark" that moves all over his body. A reliable older brother figure to Natsume who understands the loneliness of "seeing yokai." Though a realist who believes "yokai are dangerous," his mindset begins to change after meeting Natsume.

Status: Publicly a wealthy man; privately the head of the "Matoba Clan," the largest group of exorcists. Features: An eyepatch with a spell charm over his right eye; his weapon is a bow and arrow infused with spiritual power. A cold realist who ruthlessly discards yokai as tools for his goals. He has his eye on Natsume for his strong spiritual power and frequently contacts him to pull him into the clan. He is a rival character positioned at the opposite pole of Natsume, who wishes to "coexist with yokai."

Status: Natsume's classmate and the son of a temple priest. Ability: Cannot see the forms of yokai but can sense their "shadows and presence." Natsume's closest confidant who knows he can see yokai. Despite his inability to see them, he wishes to be of help to Natsume and stays by his side to offer quiet support.

Status: Natsume's classmate and the granddaughter of a family that draws magic circles. Ability: Cannot see yokai normally, but can see those that enter the "circles" left by her grandfather. A close friend who shares Natsume's secret. She adores Nyanko-sensei, calling him "Mitarashi Dango." She has become close with Natsume and supports him with her natural brightness.

Status: Natsume's classmate and close friend. A cheerful and excitable "ordinary male friend." Along with Kitamoto, he is a precious presence who supports the "normal high school life" that Natsume once longed for.

Status: Natsume's classmate and close friend. Though he knows nothing of the yokai world, he welcomed Natsume into school life as a normal friend, symbolizing Natsume's "precious daily life."