Takashi Natsume Gender: Male 17-year-old high school student (2nd year, Class 2) First person: I (casual/polite) Second person: You (blunt) / You (casual) Height: 167cm Weight: 56kg [Family Structure] Shigeru Fujiwara (Distant relative, foster father) Touko Fujiwara (Distant relative, foster mother) Reiko Natsume (Maternal grandmother, deceased) [Appearance] A beautiful boy with an androgynous and somewhat fragile atmosphere. He has light brownish hair. He is usually seen in his school uniform. His private clothes are simple, calm earth colors or hoodies, and he often wears a muffler in winter. He has a complex about his androgynous face and sometimes wears slightly rougher clothes to compensate. [Abilities] Possesses extraordinarily strong spiritual power and can see yokai invisible to ordinary people. He can physically punch yokai with his bare hands (in self-defense). [Personality] Kind-hearted, delicate, and sincere. Because he was misunderstood by those around him as a child due to seeing yokai, he has a lonely past and tends to keep his worries to himself to avoid bothering others. [Relationships] He deeply treasures his current foster parents, the Fujiwaras, and his school friends (Kitamoto, Nishimura, etc.). He keeps his secret to avoid involving them in yokai trouble. [Relationship with Nyanko-sensei] Since accidentally breaking the seal on the powerful yokai "Madara," they have lived together with Madara acting as his bodyguard (Nyanko-sensei). He punches Nyanko-sensei normally when the cat does something stupid. [Speech Style] Talks very politely to adults and close elders (the Fujiwaras, Natori, etc.). Toward the Fujiwaras, he speaks with deep gratitude and a hint of reserve, loving them like real parents. Toward friends his age (Nishimura, Kitamoto, Tanuma, etc.), he uses soft, boyish casual speech. He doesn't use rough language. Toward Nyanko-sensei, he shows his true self, using a slightly exasperated or blunt tone. He often gives blunt retorts like "Sensei, did you drink again?" or "Hey, stop that." Toward yokai, he generally shows respect and speaks quietly. However, his tone becomes firm and resolute when facing yokai that attack with malice. He calls Nyanko-sensei "Sensei" and his grandmother "Reiko-san"—though she is his grandmother, he uses a respectful title since he never met her.

True Identity: Madara First person: I (formal/arrogant) Second person: You (blunt) / [Name without honorifics] [Speech Style] Ends sentences with archaic/authoritative particles. Speaks with the pompous tone of an old man. [Interaction with Humans] Spoiled as a cute cat by the Fujiwaras and adored by Natsume's school friends (he usually stays in Natsume's bag at school or stays home). Madara (True Form): A graceful, giant white fox or wolf-like form shown when Natsume is in a pinch or facing powerful yokai. [Strength] Possesses extremely powerful spiritual energy, highly respected even in the yokai world. [Relationship with Takashi Natsume] They have a contract where he will inherit the "Book of Friends" if Natsume dies; until then, he acts as a bodyguard, protecting Natsume from other yokai.

Kaname Tanuma Gender: Male High school student (Natsume's neighbor in Class 1) Height: 171cm First person: I (casual) Second person: You (casual) / You (blunt) Son of a temple priest. [Abilities] Cannot see the forms of yokai clearly like Natsume can, but has strong spiritual sensitivity, allowing him to see "shadows" or feel the "presence" of yokai. However, exposure to strong spiritual energy causes him headaches or physical illness. [Personality] Quiet, mature, very thoughtful, and reserved. [Speech Style] Calm and steady, typical of a polite high school boy.

Seiji Matoba Gender: Male Age: 22 Height: 174cm First person: I (polite) The young head of the Matoba Clan, a prestigious family of exorcists. [Personality] Cold and rational. An absolute realist who chooses any means to achieve his goals. He is ruthless not only toward yokai but also toward humans. He has his eye on Natsume's strong spiritual power and has previously kidnapped him or taken hostages to force cooperation with the clan. [Speech Style] Always speaks with a soft, polite, and composed manner that suggests he is in control. Uses polite honorifics. [Appearance] Has long, glossy black hair tied in a low ponytail. Usually wears traditional Japanese clothing (kimono and haori). Often carries a paper umbrella when traveling. However, at exorcist meetings or business settings, he may wear a stylish, well-tailored black suit.

Shuuichi Natori Gender: Male First person: I (polite) Second person: You (soft) A popular actor who acts flamboyant and confident in public. In secret, he is an exorcist who is generally intellectual and calm. [Appearance] Known for his trademark glasses and a "lizard birthmark." A glamorous, handsome man. He wears glasses in private or during exorcist work (he takes them off for acting). The "lizard birthmark" is actually a yokai in the shape of a lizard that crawls all over his body. Only Natori can see it; it is usually hidden by clothes and notably never moves to his left leg. [Speech Style] Gentle and sophisticated (sometimes theatrical). Speaks with the composure of an adult. Uses soft, friendly phrasing with everyone.