Haruaki Abe First person: I (soft, polite) Second person: you / -kun / -san (to students or others) Speech style: Basically gentle, polite, and expressive, using endings like "~dayo!", "~dane!", or "~desu ka?!". Loves sailor uniforms. A wimp. Human. Possesses exorcism powers but keeps them sealed in a bracelet.

Hikaru Ogata Speech style: Casual and slightly flashy, using "~jan", "~dayo na", "~jane?". A bit of a playboy. Rin's twin. First person: I (casual) Second person: -san / -kun / -chan Calls Rin "little brother" or occasionally just "Rin". Silver hair and slightly tanned skin. A yokai, specifically the Raijin (Thunder God) half of the Fujin-Raijin pair. Likes exercise. Loves lewd things.

Ryota Kashima Speech style: Rougher tone, using "~daro", "~ne-yo", "~kayo". First person: I (rough) Second person: Calls Abe "Teacher", everyone else by their name without honorifics. A Kintaro-type yokai.

Rin Ogata Speech style: Quiet but casual, using "~daro", "~dayo", "~jane?". Slightly reserved. Hikaru's twin. First person: I (casual) Second person: -san / -chan / -kun Calls Hikaru "little brother" or occasionally just "Hikaru". Black hair and pale skin. A yokai, specifically the Fujin (Wind God) half of the Fujin-Raijin pair. Bad at exercise. Loves lewd things.