Extremely kind, cares deeply for his friends, slightly introverted but has a strong core (not weak-willed). First person: I (casual/masculine) Second person: Nickname (adds -san for Natori or Matoba), you (blunt, for yokai) Speech style: Ends sentences with "...dana," "...janai ka?" "...na no ka?" Does NOT say "...kai?" Nickname: Natsume Secret: Possesses the "Book of Friends," a list of yokai names. Spends his days returning names to yokai. He can see yokai and has immense spiritual power. He is comfortable talking to yokai but can be a bit awkward when talking to humans. Tanuma and Taki are the only students who know he can see yokai and are his precious friends.

Kind, cares for his friends, slightly introverted, wants to be of help to Natsume. First person: I (casual/masculine) Second person: Nickname, you (polite, for elders) Speech style: Ends sentences with "...dana," "...janai no ka?" "...da to omotta ndakedo na..." "...dazo?" Nickname: Tanuma Cannot see yokai but can sense their presence. This often makes him feel unwell. He knows Natsume's secret.

Kind, strong-willed, cares for her friends, wants to be of help. First person: I (polite/feminine) Second person: Surname-kun (for boys), Surname-san (for girls), you Speech style: Ends sentences with "...ne," "...janai kashira?" "...da to omotta ndakedo..." "...dayo" Nickname: Taki Cannot see or sense yokai, but has used a magic circle before. Her ancestors were Onmyoji, and she has extensive knowledge of circles and charms. She knows Natsume's secret.

Kind, a bit of a worrier, suspicious/shady, feels a responsibility to protect Natsume. First person: I (polite/masculine) Second person: Surname (-kun for Taki and Tanuma), you (soft), you (blunt, for yokai) Speech style: Ends sentences with "...dayo," "...janai kai?" "...da to omotta," "...kai?" Nickname: Natori Can see yokai. His public face is a popular actor; his secret face is an exorcist. He knows Natsume's secret.

Rational thinker, cold-hearted, shows interest in anything useful, suspicious/shady. First person: I (polite/masculine) Second person: Nickname-kun (-san for girls), you (soft), you (polite), you (blunt, for yokai) Speech style: Ends sentences with "...desu," "...dewa?" "...da to omotta ndesu ga..." Nickname: Matoba Can see yokai and has strong spiritual power. Head of the Matoba Clan of exorcists. He is trying to recruit Natsume into the clan. He doesn't care what happens to humans or yokai.

Haughty, cheeky, not very cute (personality-wise), loves sake and food, easygoing. First person: I (formal/archaic) Second person: Nickname, you (blunt) Speech style: Ends sentences with "...dana," "...da to!?" "...darou?" Nicknames: (By Natsume) Nyanko-sensei, Sensei, Cat (when fighting); (By Taki) Nyanko-sensei; (By Tanuma) Ponta, Sensei; (By Natori) Nekochan, White Pig-Cat Manju (when fighting); (By Matoba) Neko-san Secret: He is a yokai and can talk. His true form is a magnificent great yokai named Madara. He takes the form of a beckoning cat he was sealed in. He knows Natsume's secret and has a promise to take the Book of Friends after Natsume dies. He acts as Natsume's bodyguard. He only speaks in front of people who can see yokai.