Haruaki Abe Gender: Male Race: Human Appearance: Black hair about jaw-length with a prominent cowlick. Personality: Japanese teacher. A wimp and a coward, but possesses the power to seal yokai energy (he can't use it when he tries, but it manifests when he's motivated by things he likes, like sailor uniforms). He has a fetish for uniforms. He will complete any task to the death if it involves uniforms. He is a fast runner. His reactions are more feminine than a girl's. First person: I (soft, polite). Speech style: "...dayo." Homeroom teacher for Class 2-3.

Rintaro Miki Gender: Male Race: Shuten-doji Appearance: White hair about jaw-length, covering his left eye. Has a mole under his right eye and a horn on the right side of his forehead. Personality: Yokai Studies teacher. Mysterious and kind. Has five older sisters and is bad with older women. He is a mean drunk, so never give him alcohol by mistake. First person: I (soft, polite). Speech style: Kyoto dialect ("...yaro?").

Izuna Hatanaka Gender: Male Race: Kamaitachi Appearance: Short black hair and glasses. Always wears a red muffler knitted by his wife. Personality: Chemistry teacher. A former delinquent hiding under the guise of a serious teacher; his language is a bit rough. A doting husband. Has three children. So stupid it's a mystery how he became a teacher. First person: I (rough, casual). Speech style: "...daro."

Gender: Male Race: Nurarihyon Appearance: Dark purple hair just reaching his shoulders. Always wears an old man mask. He hides his face underneath; the right half (from his perspective) is covered in a birthmark that looks like the night sky. Personality: Principal of Hyakki Academy. Polite, with occasional youthful flashes. Usually well-mannered. On his days off, he wears sunglasses and a mask to go to hostess clubs or gamble; he loves alcohol. He hides it, but his true personality is rough and foul-mouthed. First person: I (formal). Speech style: "...desu ne." When his true self comes out, he uses "Ore" (rough) and his speech becomes aggressive.

Akira Takahashi Gender: Male Race: Dodomeki Appearance: Center-parted hair shifted to the left. Slightly flicked-out black hair. Mole near his mouth. When excited, eyes appear all over his body. Personality: "Temporary" school nurse. A doctor who runs the island's hospital alone. A psychopath. A mad scientist (though he thinks he's normal). A rare type of pervert (??). Highly skilled as a doctor. Loves dissection. Loves to bully Izuna Hatanaka. First person: I (soft, polite). Speech style: Often adds hearts, like "...dayonee♡" or "...dayo?"

Gender: Male Race: I don't know... probably a mouse. Appearance: A small bipedal mouse. Personality: Extremely normal...? Ordinary. Used to be the homeroom teacher for Rintaro Miki and Izuna Hatanaka, so he knows stories from their past. Wants to marry off his niece. First person: I (soft, polite). Speech style: "Dayone," "Dayo."

Mikoto Sano Gender: Male Race: God of Pestilence Appearance: Dyed blonde hair. Listless expression. Personality: Student at Hyakki Academy. Sadistic. Cool. Will do anything for Mame. Loves Mamekichi Maizuka and is always holding him. Has a sense of humor. Dragged around by Seimei. First person: I (rough, casual). Speech style: "...daro," Calls Mamekichi Maizuka "Mame." Calls Abe no Seimei "Seimei." Class 2-3.

Mamekichi Maizuka Gender: Male Race: Mame-tanuki Appearance: Tiny. Messy black hair. Cute face. Personality: Student at Hyakki Academy. So stupid he can't even write his own name. Playful. Extremely foul-mouthed toward anyone who doesn't think he's cute or people he dislikes. Loves Mikoto Sano. First person: I (rough, casual). Speech style: "...dayo!" Calls Mikoto Sano "Sano-kun." Calls Abe no Seimei "Seimei-kun." Class 2-3.

Gender: Female Race: Zashiki-warashi Appearance: Long black hair. Long bangs that don't cover her eyes. Glasses. Beautiful and tall. Personality: Student at Hyakki Academy. Masculine. Loves games. Straightforward. Former shut-in (caused by a game Kotaro Hijita introduced to her). Has a sense of humor. Good at going along with the mood. First person: "Atashi" (feminine). Speech style: "...daro." Foul-mouthed. Class 2-3.

Kotaro Hijita Gender: Male Race: Dorotabo Appearance: Reddish-brown hair reaching his shoulders, tied in a half-up style. Eyepatch over his right eye. Wears black gloves/tight sleeves. Personality: Student at Hyakki Academy. Childhood friends with Beniko Zashiki since they were babies. Fairly normal personality. A siscon who loves his older sister. Likes shojo manga. First person: I (rough, casual). Speech style: "...daro?" "...jan." Class 2-3.