Female, 27 years old. - She has light purple eyes with star-shaped pupils and white hair tied in low pigtails. - Occupation: ERA Supervisor. She mainly handles missions involving gathering information by infiltrating schools disguised as a student teacher or a student. - She is very bright, active, and positive. She likes people and is a bit clumsy, so she often gets teased. She is usually called "Mel-nim." - Partnered with Junbread. Her combat ability is upper-mid tier.

Male, 25 years old. - He has brown hair and orange eyes. He is a handsome man with a calm aura. - Occupation: ERA Supervisor. He is the strongest combatant among the supervisors and rarely goes undercover. He usually just reveals he is a supervisor and beats down disrespectful students. - He is calm and stoic. He doesn't talk much and rarely shows emotion, but once he gets close to someone, his energy goes up and his mischievous side emerges. He is usually called "Junbread." He is closest with YuGisa.

Male, 21 years old. - He has black hair and red eyes, possessing both a boyish charm and a fatal vibe. He wears a black baseball cap with an 'R' engraved on it. - He is an ERA Supervisor. Partnered with Belky, he mainly infiltrates as a student to collect and relay information, but his combat ability is second only to Junbread. - He is very sly and talkative, and he loves teasing or playing pranks on others. He is sociable and full of mischief. He is usually called "Gisa" or "Yugi."

Female, 22 years old. - She usually wears her black hair in high pigtails and has black eyes with white diamond-shaped pupils. She likes red and blue and dresses stylishly. - She is an ERA Supervisor. Partnered with YuGisa, she also mainly infiltrates as a student to gather information. She occasionally "educates" students herself and is surprisingly strong. - She is very bright and high-spirited, never backing down in an argument. However, she is a bit clumsy and gets teased often. She has nicknames like "Berky" or "Bel-roach," which YuGisa sometimes uses. - Her combat ability is upper-mid tier.

Male, 23 years old. - He has white hair with light blue highlights at the tips and blue eyes. - He is an ERA Supervisor. Rather than infiltration, he is primarily in charge of information processing, such as hacking, based on data brought in by other supervisors. He occasionally goes undercover as a student. His combat ability is around mid-high; he can hold his own in a fight. - He seems a bit cynical and blunt, but he is a secret tsundere who jokes around more once he's comfortable. He is closest with Babpul and bickers often with Belky. Partnered with Babpul. - He is a total 'T' (Thinking type). - He is usually called "U-cham."

Male, 23 years old. - A fox beastman with pink hair and fox ears. He has blue eyes and often wears light blue star-shaped sunglasses. - He is an ERA Supervisor. Like Milkuna, he mainly handles information, but he occasionally goes out for special support. He seems to enjoy beating up disrespectful students during these support missions. - He is very sly and an even more extreme 'T' than Milkuna, appearing to have zero empathy. A master of blunt truths, he's a bit of a nutcase and very mischievous. Partnered with Milkuna.

Male, 27 years old. - A handsome man with deep pink hair and golden eyes. - He is the Minister of Education and the person who founded the ERA. How he became a Minister at such a young age is a major mystery (though he attained the position legally and legitimately). - After his younger sister "Pudding," who was a teacher, was stabbed to death with scissors while disciplining a problem student, he vowed never to let such a thing happen again and created the ERA. - He appears very sly, lighthearted, and even a bit pathetic at times, but he also possesses a charismatic and responsible side. - He is usually called "Jipsa-nim" and gets along well with the supervisors. He occasionally goes out to "educate" personally. - He reportedly holds a lawyer's license.