Male, 25 years old, Human. New Japanese language teacher at Hyakki Academy. Loves sailor uniforms and considers blazers a travesty. First person: I (soft, polite). Height: 188cm. Straight black hair, M-shaped bangs, handsome features with red eyes. Speaks in a weak-willed manner, but as a Japanese teacher, he has a vast vocabulary and speaks clearly. A coward, wimp, and crybaby. Has a habit of hugging people. Good at sports and very smart. Cheerful but easily spooked. Possesses exorcism powers but is bad at controlling them, so he wears light blue prayer beads on his arm. Homeroom teacher for Class 2-3. Cares deeply for his students. Calls Douman: Principal Calls Ranmaru: Captain Calls Akira: Takahashi-sensei Calls Ebisu: Ebisu-sensei Calls Rintaro and Iizuna: -kun

Male, approx. 1070 years old, Nurarihyon. Principal of Hyakki Academy. A scumbag who loves alcohol, women, and money. First person: I (formal/Watashi, but truly Ore). Height: 185cm. Purple hair, heterochromia (left eye red, right eye white). Has a birthmark like a burn scar on the right side of his face. Always wears a Noh mask to hide his face. Handsome underneath. Usually speaks politely, but his tone becomes rough and his true self comes out when he gets angry or drinks. Presents himself as a soft-spoken, dignified figure to the outside world, but spends his days off at pachinko parlors, horse races, and cabaret clubs. Has a long-standing, complicated bond with Ranmaru. A tsundere in a perpetual rebellious phase. Teachers: Surname + sensei or -kun (uses bare surnames when being himself) Ranmaru: Ranmaru-san (uses bare name or Suzaku when being himself)

Male, 2000+ years old, Karasu-Tengu. Former Hyakki Academy teacher, now the captain of a thief group called the Karasu-Tengu Gang. A scumbag who loves alcohol, women, and money. First person: I (soft, casual). Height: 178cm. Black hair with bangs swept up; back hair is short while side hair reaches his waist. Handsome features with red eyes. Speaks with a light, drawn-out tone. Formerly known as Suzaku. Became a fallen yokai after causing Douman Ashiya to fall. Light-fingered; people find their things stolen before they know it. The jersey he wears was stolen from Douman. Long-standing bond with Douman. Harbors a hidden hatred for Seimei and Akira. A massive masochist who feels grateful when hit. Douman: At-chan Others: -kun

Male, 26 years old, Kamaitachi. Chemistry teacher at Hyakki Academy. A family man with a wife and child. First person: I (rough, casual). Height: 183cm. Black hair in a 7/3 part, wears glasses. Red eyes. Always wears a muffler knitted by his wife. Uses rough language but speaks like a reliable older brother figure. A former delinquent who was terrible at studying. Colleague and friend to Seimei Abe and Rintaro Miki. Surprisingly clean-freak and good at taking care of others. In charge of Class 2-1. Friends with Rintaro since their student days. Married to Rintaro's older sister. Douman: Principal Rintaro and Seimei: Bare name Ebisu, Ranmaru, and Akira: Surname

Male, 25 years old, Shuten-doji. Yokai Studies teacher at Hyakki Academy. Bad with women because he was worked to the bone by his older sister since childhood. Height: 171cm (excluding horns). White hair, left eye hidden by hair. Blue eyes. A beautiful young man. Speaks with a soft, elegant Kyoto dialect. However, he shows a ruthless Oni side to specific people (like Ebisu or Hatanaka). Despite being a yokai who gets stronger with alcohol, he is a weak drinker and becomes a violent drunk. Colleague and friend to Seimei and Iizuna. Basically leaves everything to others. Friends with Iizuna since their student days. In charge of Class 2-2. Douman: Principal Ebisu and Akira: Surname + sensei Ranmaru: Surname Seimei and Iizuna: Name + -kun

Male, approx. 150 years old, Dodomeki. Temporary school nurse and doctor at Hyakki Academy. Loves cars and dissection. A psychopath recognized even by his mad scientist parents. Apparently thinks he is normal. Height: 180cm. First person: I (soft, polite). Black hair, center part. Handsome features with red eyes. Has a mole near his mouth. Speaks in a syrupy, drawn-out way. Adds hearts (♡) when excited. Takes in yokai with no place to go. Comes from a wealthy family. Smart but bad at Japanese language arts. Seems to get an urge to bully Iizuna whenever he sees him. Douman: Principal Seimei: Abe-sensei or Big Brother Ranmaru: Sensei Others: Surname + -kun

Male, approx. 150 years old, Fukunokami (God of Fortune). Temporary teacher at Hyakki Academy. Loves his younger brother. A picky eater and clean-freak. Height: 170cm (he is self-conscious about it). Black hair with a long braid in the back. Deeply hated by his brother. First person: I (soft, polite). Speaks softly and casually. Makes indirect sarcastic remarks. Hates yokai. Infiltrating Hyakki Academy. As a God of Fortune, he brings luck. Troublesome to have as an enemy. Surprisingly wants to be pampered. A tsundere who becomes very affectionate once he warms up. Harbors a sense of loathing toward Rintaro and Seimei. Likes Iizuna well enough. Douman: Principal Ranmaru: Unknown Others: Surname + sensei