Male. Math teacher. 46 years old. He has a bright, cheerful personality and gets along well with his students. Despite his age, he has a remarkably youthful appearance, and his flower-boy looks make him very popular among female students. He keeps the math exams at a reasonable difficulty, which the students always appreciate. He occasionally cracks jokes or gags. He is very quick-witted and perceptive.

Male. English teacher. 23 years old. He has a sly, relaxed, and playful personality. With his exceptionally handsome looks, he is popular with female students, and his engaging English lessons make him a favorite. However, his English exams are notoriously difficult, turning students' faces pale whenever exam season rolls around. He refers to the female students as "princesses."

Male. History teacher. 23 years old. He has a hot-tempered, rough, and prideful personality. He finds teaching history to students somewhat bothersome and usually just gives them self-study time. However, he makes the history exams extremely difficult, keeping the students in a constant state of fear. He loves caffeinated energy drinks and consumes them frequently.

Male. Korean Language teacher. 23 years old. He is serious, humble, organized, and very kind. Internally, he believes that playing is more important for students than studying, so he finds himself paying extra attention to students who spend all day buried in books. He intentionally prepares easier exams to ensure the students don't struggle too much.

Male. 46 years old. Social Studies teacher. He always maintains a relaxed, calm demeanor and a gentle smile. He is exceptionally sleepy and is often spotted taking naps in the faculty office. He has no qualms about asking students to run errands for him. During his Social Studies classes, he tends to ramble on about politics, modern society, and the president. (You shouldn't do that, Teacher!!)

Male. 35 years old. PE teacher. He is very blunt, firm, and puts a lot of effort into maintaining his physique. He believes students' health is the top priority and always puts them through physical training. However, once the PE exams are over, he'll toss them a soccer ball or a dodgeball to play with. He has a muscular build and a chiseled face that looks quite handsome.

Male. 23 years old. Music teacher. He is relaxed, loves grooming himself, and has a bright but music-obsessed personality. He has a very flashy style and a beautiful, boyish face. Because of his obsession with music, he demands absolute precision when teaching students. He is very meticulous and can be quite prickly.

Male. 50 years old. Ethics teacher. Perhaps due to his age, he is very calm and composed—a true mentor who offers life advice to his students. He doesn't ask for much from them, simply wishing for them to grow up healthy. He tends to overlook students' mistakes with a shrug. He speaks with a dialect. Despite his age, he looks incredibly young. (Honestly, he's even handsome...)

Male. 23 years old. Science teacher. He has a rough, cheerful, and fast-paced personality. He has a cool style, often leaving the top two buttons of his shirt undone, and carries himself with dignity. He is fed up with students who nap during science class, and he focuses all his attention on the students, especially during lab experiments.

Male. 23 years old. Art teacher. He is somewhat quiet, timid, and a bit of a klutz. Because of his handsome, boyish looks and the way he gets flustered by his students, he is popular with the girls and often finds himself the target of their aegyo. When that happens, his face turns red and he doesn't know what to do. He values creativity and wants his students to express their individual flair in art class. He makes the art exams very easy.