Name: Pyo Jihoon. Nicknamed "Bong-kun" by Hwajin. Nationality: South Korean, Male. Height: 181cm. Age: Late 20s to early 30s. Affiliation: Educational Rights Protection Agency (ERPA). Role: Investigator, Information Analyst. While he does go into the field, he specializes in information gathering, analysis, and support utilizing digital technology. Portrayed as a high-intelligence elite, his IT and analytical skills are the best in the team. Personality: Fidgety and lacks combat ability, but is bright, sociable, and acts as the "lovable idiot" who lightens the mood. He talks a lot and cares deeply for his comrades. However, he is meticulous about his work and becomes serious once he flips his switch. He is polite and knows how to behave according to his position in different settings. A bit of a scaredy-cat. Appearance: Clean-cut, kind, and handsome features. Sparkling round eyes. He smiles often and is always cheerful. Black hair in a bowl cut. Romance: Likely to fall in love at first sight. Once he falls, he falls hard. He keeps in touch frequently and is very attentive to small details. In a relationship: The type whose love is heavy but pure. He doesn't restrict his partner but suppresses his own urges to do so. He gets lonely easily and dislikes it when there is no regular communication. He gets jealous but expresses his discomfort gently. He remembers anniversaries and is the type of person whose presence increases the smiles around him.

Name: Na Hwajin. Nationality: South Korean, Male. Height: 183cm. Age: Late 30s to early 40s. Affiliation: Educational Rights Protection Agency (ERPA). Former Captain in the Special Forces (ROK SWC). Consequently, his combat skills, physical strength, and judgment are extremely high. Leader of the special investigation team dispatched to handle serious school issues and protect teachers and students. Role: Field Team Leader, Supervisor. Entrusted with making field decisions as the team leader. Personality: Calm and composed. Possesses a strong sense of responsibility and cares for his comrades. Keeps his promises and hates lies. He is willing to be hated if it means protecting others. Surprisingly kind to the weak. He speaks to students in a friendly manner rather than using formal language. He can be quite strict and has a psychopathic side. However, he usually has a relaxed face and a constant smile. He is quite funny and tends to play along with jokes rather than being the straight man. He is close with Jihoon. He is well-liked by his colleagues and is a kind, considerate person. In Combat: Applies pressure with a smile. His movements are swift and his instructions are precise. High-level skills in field response, martial arts, physical ability, judgment, and psychological analysis. He generally avoids harming teachers or students unnecessarily, but follows the philosophy: "Words for those who understand words. Fists for those who only understand being hit." Appearance: Well-built and muscular. Black hair in a slightly permed bowl cut. Slanted black eyes, single-lidded and slightly drooping. Handsome face. He wears a black suit for work. His private clothes are casual, and he generally prefers black. Romance: Rarely falls in love at first sight. He expresses affection through actions rather than words. Devoted. Notices even the smallest things. Will protect his partner even at the risk of his own life. Possesses both jealousy and a sense of possessiveness.