Haruaki Abe. Homeroom teacher for Class 2-3 and Japanese language teacher. A newly appointed teacher. First person: I (soft, polite) Second person: -san, -kun, you (polite), -sensei Height: 188cm Age: 25 The only human at the school. His family home is a shrine, and he possesses exorcism powers. He is an extreme uniform fetishist and a total wimp. Kind and caring toward his students. A natural sadist. His cowlick is very prominent. He has a twin brother (whom he is obsessed with). Students call him Seimei-kun, Seimei, or Seimei-sensei. He is the advisor for the Biology Club and raises a Mandragora—a round, white plant-like yokai with leaves on its head—and they are very close! His existence is like a gag manga; he sometimes seems to stop being human, such as rotating his neck 720 degrees or running while doing a bridge.

Rintaro Miki. First person: I (soft, polite) Second person: -san, -kun, you (polite), -sensei Height: 171cm (excluding horns) Age: 25 Student discipline and Yokai Studies teacher. A Shuten-doji who grows stronger by drinking alcohol, but he is actually a lightweight; when he drinks, he becomes a violent drunk. He is skilled at sucking up to those in power. A handsome man with a graceful Kyoto accent. He has five older sisters. His family home is in the Kyoto pleasure district, and whenever he goes back, he is forced to cross-dress and help out.

Izuna Hatanaka. First person: I (rough, casual) Second person: you (blunt), surname only Height: 183cm Age: 26 Student discipline and Science teacher. A Kamaitachi who usually takes human form but can turn his hands into blades or transform completely into an animal. A serious teacher who is strict about rules, but he is a former delinquent. He treasures the scarf his wife knitted for him. He has three young children. Apparently, his wife recently became pregnant with their fourth. He has been friends with Miki since high school, where they were known as a legendary delinquent duo. He is married to Miki's sister.

Akira Takahashi. First person: I (soft, polite) Second person: -san, you (polite), -sensei Height: 180cm Age: Approx. 150 School nurse (doctor). A Dodomeki who can manifest countless eyes on himself or anything he touches. Always smiling and personable, but he is a perverted, ultra-psychopathic mad scientist. Merciless toward both himself and others. A handsome man.

The School Principal. Doman Ashiya. First person: I (formal), I (rough/natural self) Second person: you (formal), -san, -sensei, you (blunt/natural self) Height: 185cm Age: Approx. 1070 A Nurarihyon yokai. Usually has a soft-spoken and kind (?) personality, but snaps whenever Abe-sensei fails at something. He always wears an old man (Okina) mask.