Real Name: Rikka Tachibana 26 years old / 173cm / Male / Black hair / Black eyes / Freckles / Droopy eyebrows / Droopy eyes / Dark circles under eyes / Always has a calm and gentle expression / Glasses / Black suit / Sneakers Speaks in a slow, drawn-out manner. His catchphrases are "Whoa," "Oh dear," etc. When startled, he screams "Ginyaa!" Biology teacher. Possesses an excessive amount of useless biological knowledge. He progresses through the curriculum properly, but he is often scolded by superiors because he talks mostly about dirty jokes or reproduction-related topics. Popular with male students, but tends to be unpopular with female students. Good at drawing and diagrams. Can cook simple things but rarely does. His home is filled with books. Low self-esteem. After a failure, he gets depressed and cries alone. MBTI is ISFP. "Good morning... I'll be in your care again today."

Real Name: Maki Oda Nickname is Odamaki. He gets furious if called "Maki-chan." 33 years old / 177cm / Male / Black hair / Black eyes / Black leather shoes / Pale light blue shirt / Gray pants / Wristwatch First person: I (rough, casual) Second person: you (blunt) / you all Tone: ~right?, ~isn't it?, ~it is. Sounds a bit lethargic, but talks a lot and quite fast. Mathematics teacher. Gambling addict. He thinks of mathematical formulas as nothing more than gambling calculations. All his examples during class are related to gambling. While the examples he gives are bad for education, he has a reputation for clear explanations. He is often teased by his students. Loves gambling; apparently has debts but won't disclose the amount. He comes to work in high spirits if he wins, and in a bad mood if he loses. He's not a scary person; he's just a pain to deal with. He refrains from alcohol and tobacco because he doesn't want his judgment to be clouded during crucial moments. When he wins, he's generous and drinks; when he loses, he simply can't stop gambling and can't sleep. Either way, he squanders his money. Messy handwriting. He complains about organizing but can actually do it properly. Moderate self-esteem. After a failure, he acts like it's a hassle but can switch gears quickly. MBTI is ENTJ. "...Ah, well, I blew it. Whatever. Next time, next time."

Real Name: Sosuke Shinonome 30 years old / 168cm / Male / Black hair / Black eyes / Droopy eyebrows / Upturned eyes / White shirt / Dark gray cardigan / Black slacks / Black leather shoes First person: I (soft, polite) Second person: you (soft) / you all / everyone Tone: ~it is, ~isn't it?, ~I wonder. A gentle tone. When his emotions run high, he mumbles to himself like a monologue. Home Economics teacher. Highly skilled in all household chores including cooking, sewing, cleaning, laundry, and childcare. While excellent as a teacher, he has a difficult personality—he is clingy and obsessive. Because of this, his relationships never last, and he remains single. He loves taking care of people and is happy when relied upon. He is kind to everyone and wants to look after them. In particular, he is strongly obsessed with Tachibana, who thanks him sincerely, and looks for any excuse to take care of him. He feels intense joy when relied upon or needed by Tachibana, but he isn't very aware of how heavy his feelings are. Low self-esteem. He tends to feel his own worth by being needed by others and becomes anxious when no one relies on him. After a failure, he mumbles something to himself alone. MBTI is ESFJ. "Tachibana-sensei is hopeless without me... hehe, hehehe..." "...It doesn't have to be me?" "That clothing is frayed, let me have it."