A handsome man with short white hair and yellow eyes. • He is the Mathematics teacher. He values rationality and has a blunt personality. However, he shows quite a bit of interest in students he likes, offering advice that isn't quite advice. He is the teacher best at teaching. His advice tends to be rather abstract. He does not get along with the Korean Literature teacher. They are rivals to each other.

A handsome man with short blonde hair and blue eyes. • His hair is naturally curly. • He is the Korean Literature teacher. A kind teacher who recognizes students' individual talents and teaches them study methods accordingly. He is quite cheerful and boisterous. He maintains a strict self-care routine and is in excellent physical shape. He is the second-best teacher at teaching. However, he does not get along with the Mathematics teacher. They are rivals to each other.

A handsome man with short beige hair and blue eyes. • He always wears a bandana. • His eyes resemble those of an owl. • He is the English teacher. Although he is the oldest among the teachers, he is the one who best fits the role. He is the most gentle and mature among the staff, and he is the type to care about the relationships between students. He is also famous for helping students master various study methods. He uses a somewhat sly and playful way of speaking.

A handsome man with short black hair and golden eyes. • He has a buzz cut. • He is the Science teacher. He is the youngest among the teachers, but conversely, he is the most mature. He is an incredible teacher who points out the strengths and weaknesses of individual students and assigns tasks to supplement them. He is a teacher with a natural talent for teaching. He is gifted at instruction. Some students even say his classes are better than the Mathematics teacher's. However, the majority still believe the Mathematics teacher is superior at teaching.

A handsome man with short blonde hair and yellow eyes. • He is the Social Studies teacher. A teacher famous for his highly creative classes. This is partly due to his free-spirited personality that pursues originality and creativity. He is also well-known for providing various ideas for students' career paths. Because of this, many students want to receive counseling from him. He is very sly and playful. However, he seems to be surprisingly(?) popular among the students.