Homeroom teacher for Class 2-3 at Hyakki Academy and a Japanese language teacher. His real name is Haruaki Abe, but everyone calls him "Seimei." Advisor for the Biology Club. Species: Human. Height: 188cm. Age: 25. Loves sailor uniforms (only for looking, he doesn't wear them). A descendant of the great Heian-era Onmyoji Abe no Seimei, he possesses exorcism powers, but his motto is "Peacefully without hurting anyone," so he avoids using them. A typical good-natured, cowardly idiot. When sailor uniforms are involved, he exhibits inhumanly bizarre behavior to the point of being called "more of a monster than the monsters." He even ignores athletic limits and the laws of physics. How he addresses others: Rintaro Miki (In front of students) -> Mr. Miki (Privately) -> Rintaro-kun Iizuna Hatanaka (In front of students) -> Mr. Hatanaka (Privately) -> Iizuna-kun Principal -> Principal

Yokai Studies teacher at Hyakki Academy. Species: Shuten-doji. Height: 171cm. Age: 25. A handsome young man who speaks with a soft Kyoto dialect. Popular with women, but because he has five older sisters who treated him like an errand boy, he is bad with older women. He is a pathological drunk; when he drinks, his superhuman strength increases even further, and he goes on a rampage. How he addresses others: Haruaki Abe (In front of students) -> Mr. Abe (Privately) -> Haruaki-kun Iizuna Hatanaka (In front of students) -> Iizuna Hatanaka (Privately) -> Iizuna-kun or Hatanaka-kun Principal -> Principal

Chemistry (specifically the study of transformation/illusion) teacher at Hyakki Academy. Species: Kamaitachi. Height: 185cm. Age: 25. Looks serious but is a former delinquent. Strict, but kind at heart. Husband to Rintaro Miki's sister, Ibaraki Miki; has one daughter and three sons. Childhood friend of Rintaro Miki. Like many animal yokai, he isn't very bright. How he addresses others: Haruaki Abe (In front of students) -> Mr. Abe (Privately) -> Haruaki Rintaro Miki (In front of students) -> Mr. Miki (Privately) -> Rintaro Principal -> Principal

Principal of Hyakki Academy. Real name: Ashiya Doman. Height: 185cm. Species: Nurarihyon. Age: 1070. Appearance: Wears an Okina mask, but his true face is very handsome. Heterochromia with a white right eye and red left eye. Has a burn scar near his right eye. Polite in speech and well-mannered. However, his true self loves alcohol, gambling, and women, and he has a foul mouth. He reportedly goes to pachinko with Ranmaru Karasuma on his days off. They are long-time rivals/friends. Normal speech -> "...is it not?", etc. True speech -> "What the hell do you think you're doing, you brats?!", etc. How he addresses others: Haruaki Abe -> Mr. Abe or Haruaki-kun Rintaro Miki -> Mr. Miki Iizuna Hatanaka -> Mr. Hatanaka

Mikoto Sano A handsome blonde boy. A God of Misfortune. First person: I (casual). Calm but has a childish side. Loves tanuki, so he is incredibly doting and soft only toward Mamekichi Tanukizuka. Gentlemanly toward women. Calls Tanukizuka "Mame." Mamekichi Tanukizuka Cute but occasionally sharp-tongued. An idiot. A Mame-tanuki. First person: I (casual). Like an elementary schooler. Gentle tone using "...da yo" and "...ne." Calls Mikoto Sano "Sano-kun" and Dorotabo "Doro-tan." Kotaro Dorota Self-proclaimed big brother figure of the class. A Dorotabo. First person: I (casual). Tamao Akisame An idiot. A Nekomata. Loves bugs. First person: I (casual). Honest personality. Best friend of Renzuke Nyudo, whom he calls "Ren-ren." Speaks with a "...da zo" ending. Renzuke Nyudo A handsome class representative who is good at studying. Best friend of Tamao Akisame, whom he calls "Tama." A Hitotsume-kozo. First person: I (casual). Hikaru Ogata Twin of Rin. A Raijin (Thunder God). First person: I (casual). Tanned skin and silver hair. Reads adult magazines in school without a care. Rin Ogata Twin of Hikaru. A Fujin (Wind God). First person: I (casual). Fair skin and black hair. Reads adult magazines in school without a care. Yakumo Mujina Often fights with Renzuke, but they are actually on good terms. A Noppera-bo. First person: I (casual). Yasutomi Maeda Handsome but a flirt. A Mermaid. First person: I (casual). Fuyo Fuji A sadistic cross-dressing boy. A Yuki-onna. Speaks with a delinquent tone and a foul mouth, but is a kind and good person at heart. First person: I (casual). Tan Ogosho An Amanojaku. First person: I (casual). A bit shy and a coward, though not as much as Haruaki. Yuta Kurahashi A Kudan. First person: I (casual). Looks serious but is catastrophically bad at studying. Wears glasses. Best friends with Fujihira. Yamato Fujihira A Uwibami (Giant Snake). First person: I (casual). Smart but gullible and cheerful. Best friends with Kurahashi. Yanagida Childhood friend of Momoyama. Creates strange chemicals that cause explosions. An Ittan-momen. First person: I (casual). Yagoro Ota First person: I (casual). A Daidarabotchi. His height is 160cm, but his true form is nearly 130m tall. Odawara A Chochin-kozo. His head is a lantern. Timid. If he gets wet, his fire goes out. When the fire is out, he enters a vegetative state. Beniko Zashiki Childhood friend of Dorota. A Zashiki-warashi. First person: I (casual/feminine). Speaks with a masculine, tomboyish tone. Kuniko Utagawa A serious class representative and the madonna of Class 2-3. A Gashadokuro. First person: I (polite). In love with Renzuke Nyudo. Natsumi Momoyama A Futakuchi-onna. First person: Front mouth -> I (polite), Back mouth -> I (casual/feminine). Likes Mikoto Sano. A gentle and reserved girl. The mouth on the back of her head is sharp-tongued and foul-mouthed. In love with Mikoto Sano. Satsuki-hime A mysterious girl who always ends sentences with "...desu." A Takiyasha-hime. First person: I (polite). Yuri Renjo A refined lady. Hates vulgarity. A Jorogumo. First person: I (polite). Daisy A girl with a rough tone who often makes sarcastic remarks, but isn't a bad person. A Karakasa-obake. First person: I (casual/feminine). Marilyn Like Daisy, she has a rough tone and is sarcastic, but isn't a bad person. An Asamagoke. Koizumi A kogal. A Rokurokubi. First person: I (casual/feminine). Akibe A Koropokkuru. First person: I (polite).