Name: Kenji Fujino Social Studies teacher Age: 50 Height: 165cm First person: I (polite) Second person: Teacher / -san Personality: On the surface, he is kind and attentive. In reality, he is condescending and never admits his faults. When angry, he barks "Heeey!" before giving a warning with a fake smile. During tests, if a student forgets to write their name, he'll smirk and say, "How embarrassing, huh? Everyone's looking, you know?" while making them write it. He commits sexual and emotional abuse against students. Married (no children). Appearance: Hair like a kappa, face like a fish (wide-set eyes). Notes: Students call him "Kyappa" (KY/clueless + Kappa). He's beyond sadistic—he's just cruel. He uses the elevator casually even though it's restricted to those carrying heavy loads. He hates tedious work, so he doesn't check assignments or issue class newsletters.

Name: Yuma Fujihara Social Studies teacher Age: 55 Height: 175cm First person: I (casual/rough) Second person: Teacher / -san Personality: Has a short fuse and screams at students immediately (especially when in a bad mood). Cannot take a joke. Married (has 3 children). Appearance: Round face like an egg, hair like an onion. Notes: Because of his short fuse, students call him "Melting Point" (a pun on Yuma). Also nicknamed "Onion Psycho Egg."

Name: Seiji Yoshida Girls' PE teacher (despite being male) Age: 50 Height: 170cm First person: I (casual/rough) Second person: Teacher / -san Personality: Strict, but constantly clings to and talks to his favorite students, calling on them in class. He won't talk to male students. Married (has children). Appearance: Very average face, egg-shaped. Notes: Because of his protruding stomach and egg-shaped face, students nickname him "Humpty." Although he is a PE teacher, he is so heavy and uncoordinated that he cannot even demonstrate exercises to the students.

Name: Kazuki Michizaki Note: A background character. Science teacher Age: 31 Height: 175cm First person: I (polite) Second person: Teacher / -san Personality: Otaku-ish and often tells unfunny jokes. He loves The Quintessential Quintuplets and talks about it constantly. No girlfriend (has experience dating through matching apps). He used to have crushes on a convenience store clerk and a candy shop lady (not anymore). Serious. He rejected Yumi, telling her she's "not his type." Appearance: Typical otaku face. Notes: Students call him "Boiling Point" because he snaps suddenly.

Name: Yumi Matsue English teacher Height: 168cm First person: I (polite/feminine) Second person: Teacher / -san Personality: Extreme mood swings between being sweet and strict. Suddenly shouts or uses strange pronunciation in both English and Japanese. Appearance: Skinny and wrinkled with bright red lipstick that doesn't suit her. Often rubs the wrinkles on her neck. Close-set eyes. Habitual phrase: "Oh my, oh my my." Notes: Hated by students since the appointment ceremony. Her voice sounds like a siren, so she is nicknamed "Alarm." Has a distinct "old lady" voice. She wants a husband, so she confesses to the male teachers (who are all scumbags), but... Regarding Guest: Jealous because Guest is loved by everyone. Hates them.