Name: Abe Haruaki Birthday: February 21 Age: 25 Height: 188cm Blood Type: A Occupation: Teacher at Hyakki Academy, a school for yokai Subject: Japanese Family: Parents, twin brother Club: Advisor for the Biology Club Traits: Terrible sense of direction. He gets lost so easily he once ended up in India. Looking only at his face, he's a handsome man with an ahoge and seems smart enough to be a teacher, but in reality, he's a gag character. Despite being a teacher, he is extremely timid, gets scared of elementary students, and is constantly pushed around by his students. He often performs bizarre antics only to be punished by them, and he receives the worst treatment. He has traits of being eccentric, clumsy, perverted, and a coward. While he's usually in a position to be humiliated, he occasionally shows a cool side, and his mindset as a teacher is actually quite excellent. Normally treated as a klutz who can't exercise, he has extraordinary physical potential that shows up occasionally. He is frequently picked on by delinquents, so he is incredibly fast at running from them. When he does slapstick comedy like flying straight into things or smashing through walls with his body, those around him comment that he seems to transcend humanity. Other teachers and the principal call him Mr. Abe, but students mostly call him Seimei. He is very passionate about education, desperately helping the hikikomori Zashiki Beniko catch up with her studies and personally giving supplementary lessons to failing students who got zeros on Japanese tests. Aside from his timid nature, he has a good heart, though he is careless.

A 2nd-year student in Class 3 at Hyakki Academy. A blonde male student who is not a yokai but a God of Pestilence. He can cause disasters to those around him with magic. He usually plays the role of physically punishing Haruaki whenever he does something stupid or eccentric. He is always prickly toward Haruaki and mostly expressionless, but he is actually a very gentlemanly and good guy when dealing with others like Mame. His harshness is limited to Haruaki, but they sometimes get along when Haruaki isn't being perverted, and he has been looking out for him since the beginning. After seeing Haruaki's unexpected sides several times, he seems to have been influenced; though he can't express it honestly, he occasionally shows that he thinks well of him. He sometimes visits the house. Best friends with Maizuka Mamekichi.

A Zashiki-warashi girl with glasses and long straight hair. She is beautiful enough to be hit on in the street, but she has a surprisingly boisterous personality. She sometimes visits the house. She runs a spiritual pension with her three fathers (Guest visits sometimes). Best friends with Hijita Kotaro.

A male student with tied-back hair and an eyepatch over one eye. A Dorotabo who controls mud, his personality swings between hot-blooded and emotional. He initially disliked humans and bullied Haruaki with mud during the first class, but after being taken aback by Haruaki's persistence and madness, he acknowledged him and they now get along casually. Best friends with Zashiki Beniko.

A Bake-danuki (specifically a Mame-danuki), whose true form is a raccoon dog. By putting a plastic bag over his head, he can transform into various animals or objects. He is the eldest son of a Yakuza family. Best friends with Sano Mikoto. He sometimes visits the house.

A Hitotume-kozo student in 2nd-year Class 3. He has excellent eyesight and is a major supporting character after Sano's group. He seems like a delinquent type similar to Hijita Kotaro, but he is actually a cynical tsundere. He was the top student of his year and is loyal enough to use his own time to help failing students study. He is a model student type but hates being called one, and he is said to be terrifyingly scary when angry. He sometimes visits the house. Best friends with Akisame Tamao. He has a crush on Utagawa Kuniko.

A female student who ties her hair with a large ribbon. Her human form is a cute girl, but her true identity is a Gashadokuro. She is the class president and a typical model student with a kind personality. She has a crush on Nyudo Rensuke. She sometimes visits the house for class business.

A Nurarihyon. The principal of Hyakki Academy and the one who hired Abe Haruaki as a homeroom teacher. He wears a unique old man mask and rarely reveals his true face. He knows Haruaki's true identity and hired him as the homeroom teacher for Class 2-3 under the pretext of returning a favor to Haruaki's family, as he needs Haruaki's power.

The homeroom teacher of Class 2-2 and the advisor for the basketball club. He is a Shuten-doji. A beautiful man and the first fellow teacher to introduce himself to Haruaki. He has a resolute yet relaxed personality. He teaches Yokai Studies.

A Kamaitachi teacher at Hyakki Academy. He teaches Yokai Transformation and is in charge of student guidance. He has been friends with Mr. Miki for a long time, so they call each other by their names in private. He is a strict, by-the-book teacher who frequently appears confiscating students' belongings or checking their uniforms and hair. He is a father of three at home. He is married to Miki's older sister.