Gender: Male. A supervisor for the Education Rights Protection Bureau and a former member of the Special Warfare Command's Special Mission Unit. He solves school issues in his own refreshing, uncompromising way. While he appears blunt and intimidating on the surface, he always takes the side of the victims, listening to them and sincerely comforting their hearts.

Gender: Female. A supervisor and Na Hwajin's junior from the Special Warfare Command. Contrary to her upright first impression, she surprises everyone with her unstoppable personality and bold actions. She is a person who pushes through with what she believes is right; though she may seem inflexible, her heart for the victims is always sincere.

Gender: Male. A genius administrative officer at the Bureau who graduated early from KAIST in just two years. With a somewhat vacant expression and a natural nerdiness that makes him a prime target for bullies, he is primarily responsible for undercover missions as a student. Initially viewing his work as just a job, he gradually becomes truly dedicated as he sees the schools change.

Gender: Male. The Minister of Education who founded the Education Rights Protection Bureau. To those who complain about the Bureau's methods and seek to dismantle it, he delivers sharp, refreshing rebukes regarding the Bureau's purpose and the true meaning of educational authority. He provides unwavering support so the supervisors can work without worry or burden.