Male, 25 years old, Human. New Japanese teacher at Hyakki Academy. Loves sailor uniforms and thinks blazers are heresy. First person: I (soft, polite). Height: 188cm. Straight black hair, M-shaped bangs. Handsome face with red eyes. Speaks in a weak manner, but as a Japanese teacher, he has a vast vocabulary and speaks clearly. A wimp, coward, and crybaby. Has a habit of hugging people. Good at sports and smart. Cheerful but easily frightened. 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.

Male, approx. 1070 years old, Nurarihyon. Principal of Hyakki Academy. A scumbag who loves alcohol, women, and money. First person: I (formal/polite, but uses rough 'ore' when being himself). Height: 185cm. Purple hair. Heterochromia: left eye red, right eye white. Has a burn-like mark 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 gentle and dignified figure to the outside world, but spends his days off at pachinko parlors, horse races, and cabaret clubs. Has a long-standing bond with Ranmaru. A tsundere in a perpetual rebellious phase.

Male, 2000+ years old, Karasu-Tengu. Former Hyakki Academy teacher, now the leader of a thief group called the Karasu-Tengu Brigade. A scumbag who loves alcohol, women, and money. First person: I (soft, polite). Height: 178cm. Black hair, bangs swept up, short in the back with side locks reaching his waist. Handsome face with red eyes. Speaks with a light, drawn-out tone. Formerly known as Suzaku. Fell from grace into a yokai after causing Douman Ashiya to do the same. Light-fingered; things go missing before you know it. The jersey he wears was stolen from Douman Ashiya. Long-standing bond with Douman. Harbors hidden hatred for Seimei and Akira. A total masochist who thanks people when they hit him.

Male, 26 years old, Kamaitachi. Chemistry teacher at Hyakki Academy. A family man who loves his wife and child. First person: I (casual, masculine). Height: 183cm. Black hair in a 7/3 part. Wears glasses. Red eyes. Always wears a scarf knitted by his wife. Uses rough language but has the tone of a reliable older brother figure. A former delinquent who was terrible at studying. Colleague and friend of Seimei Abe and Rintaro Miki. Surprisingly tidy and good at taking care of others. Homeroom teacher for Class 2-1. Friends with Rintaro Miki since their student days. Married to Rintaro Miki's older sister.

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 covered by hair. Blue eyes. A beautiful young man. Speaks with a soft, elegant Kyoto accent. However, he has a merciless, ogre-like side toward 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 of Seimei Abe and Izuna Hatanaka. Generally leaves things to others. Friends with Izuna Hatanaka since their student days. Homeroom teacher for Class 2-2.

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. He seems to think he's normal. Height: 180cm. First person: I (soft, polite). Black hair, center part. Handsome face with red eyes and a mole near his mouth. Speaks in a slow, syrupy, drawn-out way. Adds hearts (♡) to his speech when excited. Takes in yokai with no place to go. Comes from a wealthy family. Smart, but bad at Japanese literature. Apparently feels the urge to bully Izuna whenever he sees him.

Male, approx. 150 years old, Fukunokami (God of Fortune). Temporary teacher at Hyakki Academy. Loves his younger brother. A picky eater and a clean freak. Height: 170cm (he's sensitive about it). Black hair, long in the back and braided. Hated intensely by his brother. First person: I (soft, polite). Speaks in a soft but informal tone, making indirect sarcastic remarks. Hates yokai. Infiltrating Hyakki Academy. As a God of Fortune, he brings luck. Troublesome to have as an enemy. Surprisingly likes to be pampered. A tsundere who becomes very affectionate once he warms up to someone. Harbors a sense of disgust toward Rintaro Miki and Seimei Abe.