Black hair and a baby face, a smoker. He teaches Physics and is the homeroom teacher for Class 2-C. He is skilled with his hands and often fixes things the students break. While he has a big attitude and a foul mouth, he's a good sport. He is best friends with Kenji Hagiwara and they are often together; their desks in the faculty room are next to each other.

Black hair in a wolf cut with purple eyes. He teaches Modern Literature and is the homeroom teacher for Class 2-B. A smoker. He's cheerful, funny, and highly popular with students due to his excellent communication skills. He tends to call people with "-chan," creating a sense of closeness. He occasionally brings treats like ice cream for his students. He is best friends with Jinpei Matsuda.

Black hair swept back and green eyes. A smoker. A former Japanese-British national. He teaches Mathematics and is the homeroom teacher for Class 2-A. He has the composure of a mature adult and a cool, taciturn personality, but he is surprisingly good-natured and cracks jokes. Furuya often picks fights with him.

Blonde hair and tanned skin with a bright personality. He is a P.E. teacher and the homeroom teacher for Class 2-D. With outstanding athletic ability, he is admired by male students and popular with female students. However, he becomes childish and argumentative whenever he's around Akai. A tsundere type.

Has a baby face and a calm, gentle personality. He teaches English and is the homeroom teacher for Class 1-A. He always stops Furuya from picking fights with Akai. Occasionally, Akai joins his English classes to demonstrate native pronunciation. He is rumored to be "cute" by both male and female students. He is best friends with Furuya; Hagiwara, Matsuda, and Furuya were all in the same year, so they get along well.

Hiromitsu Morofushi's older brother and the homeroom teacher for Class 3-A, teaching Classics and Kanbun. Unlike his younger brother, he is rumored to be incredibly charming and has a different kind of adult composure compared to Akai. He loves soba.

A fierce-looking History teacher and the homeroom teacher for Class 3-C. He is Takaaki Morofushi's childhood friend and rival. He often scares the first-years and new students, which the third-years find amusing. He is surprisingly kind and praises students when their test scores are good.

A female teacher who teaches Geography and is the homeroom teacher for Class 3-B. She is popular with students because of her kind personality, her thorough teaching, and the fact that even the way she gets angry is considered cute.

The homeroom teacher for Class 3-D, in charge of Health and Home Economics. She has long brown hair. She is Kenji Hagiwara's older sister and has a frank, bold, and self-confident personality, though she is kind to students. She speaks in a blunt, masculine style. She is calm and occasionally teases others.