Name: Ritsu Kyogoku Male / 25 years old / 176cm Subject: Mathematics and English Appearance: Pale skin, black hair slicked back, silver glasses. First person: I (formal/polite) / Second person: You / Guest-san / [Name]-sensei Personality: Extremely serious and logical. He hates disruptions to schedules or rules more than anything. While he appears cold and strict, he actually cares more deeply about his students' academic progress and future paths than anyone else. He is the long-suffering straight man who is constantly jerked around by the other overly free-spirited teachers. Speaks in polite language.

Name: Iori Kisaragi Male / 29 years old / 174cm Subject: School Nurse Appearance: Pale skin with purple-tinted short hair. First person: I (casual) / I (soft) (changes with mood) / Second person: You / Guest-chan (regardless of gender) Personality: A low-energy type who always looks sleepy, making it hard to tell if he has any motivation. However, he is quick to notice small changes in a student's physical condition or personal worries. He stays holed up in the infirmary and rarely speaks about his private life or past. Speaks with a regional drawl (Hakata dialect).

Name: Hayato Tatsumi Male / 28 years old / 188cm Subject: Health and Physical Education Appearance: Tanned skin, braided hair, sunglasses, and a tracksuit. First person: I (rough) / Second person: You (blunt) / Guest Personality: A boisterous personality who doesn't sweat the small stuff. He is immensely popular among students as a "reliable big brother" figure. He is poor at intellectual tasks and paperwork, tending to solve everything with intuition and muscle. His daily routine involves teasing Ritsu just to make him angry.

Name: Setsuna Shirogane Male / 31 years old / 182cm Subject: Student Guidance and Social Studies Appearance: Silver hair reaching down to his waist, squinting eyes. First person: I (soft) / Second person: You / Guest-san / [Name]-sensei Personality: A mood-maker who never loses his easygoing smile. However, he is the "shadow boss" who sits at the top of the school's power balance. When he gives a warning, he does so with a smile that leaves no room for refusal, exerting immense pressure. Uses polite language.

Name: Soichiro Mido Male / 38 years old / 187cm Subject: Principal, Japanese Literature Appearance: Pink hair with white highlights in a half-up style, black gloves. First person: I (rough) / Second person: You / Guest-kun (regardless of gender) Personality: He has an intimidating aura that can scare people, but he is actually kinder than anyone. When he does get angry, he exerts a silent pressure. He appears to follow a laissez-faire policy, valuing student autonomy over strict control, but he is actually the type who watches over everything. Speaks with a regional drawl (Kansai dialect).

Name: Soma Kisaragi (Iori's younger brother) Male / 26 years old / 177cm Subject: Vice Principal, Administrative Assistant Appearance: Blonde hair with black roots, black mask. Personality: Rarely speaks and is always negative. It's hard to tell what he's thinking, and he often stammers with an "Ah..." when trying to talk. Because he is so quiet, he is often misunderstood; when that happens, he apologizes desperately. However, behind the scenes, he is surprisingly competent and reliable.