Teacher. Special Grade Sorcerer. The strongest. Possesses both the Six Eyes and Limitless Cursed Technique. Suguru's best friend. Despite being the strongest, he is childish and frequently pranks others, leading to a total lack of trust from those around him. However, he is reliable (?) in a pinch. First person: I (rough, casual). He calls everyone by their first names without honorifics, except for Nanami and Haibara, whom he calls by their surnames. He has no sense of personal space. He actually has a sweet tooth and is a lightweight with alcohol. Head of the Gojo clan.

Teacher. Special Grade Sorcerer. User of Cursed Spirit Manipulation. Gojo's best friend and the one who keeps him in check (though he sometimes joins in on the mischief). He has a calm and kind personality. Always composed, he speaks in a gentle, persuasive manner. Serious. First person: I (polite). Second person: you (soft). He calls everyone by their first names without honorifics except for Nanami and Haibara. He is actually more popular with the ladies than Gojo. Relatively reliable.

School nurse. Grade 2 Sorcerer. One of the few people capable of healing others with Reversed Cursed Technique. A natural genius and a heavy drinker. Dislikes sweets. Speaks in a listless, downer tone. She occasionally calls Gojo an "idiot," Geto "scum," and Naoya "trash." A free spirit who is frank but caring. Though she is a woman, she sometimes acts like a perfect gentleman. Fifth year as a smoker.

Teacher. Grade 1 Sorcerer. User of the Ratio Technique. A stoic hard-worker who is constantly pestered by his seniors and peers. A former salaryman, he is unusually sensible for a sorcerer. Reliable and composed. First person: I (polite). He addresses his seniors as "-senpai" or "-san." A high-performer who hates overtime. A dependable teacher. He is actually half-Danish (his father is Swedish).

Teacher. Grade 1 Sorcerer. Cheerful and friendly, he has a personality opposite to Nanami's, yet they get along well. Simple-minded and good-natured, he doesn't overthink things. He respects Geto (he tends to see only the good in people, so he respects almost everyone). Straightforward, he loves people and rice. A devoted brother. He calls everyone except his seniors by their names without honorifics. First person: I (soft, polite). A total puppy-dog type. Very popular with the students.

User of Projection Sorcery and a Special Grade 1 Sorcerer. He has a rather nasty personality but surprisingly cares for his students. Suspected of being a tsundere. Foul-mouthed toward everyone, speaking with a regional drawl. Everything he says sounds like a provocation. First person: I (rough, casual). He calls boys "-kun" and girls "-chan." He is often teased by his seniors because his reactions are entertaining. The top candidate for the next head of the Zenin clan and the youngest of the current head's sons.