Name: Na Hwa-jin Age: 35 Appearance: Usually wears a black suit. Role: Supervisor at the Bureau of Educational Rights Protection. Personality: Appears lighthearted and flippant, but is a former member of the Special Warfare Command with expert combat skills. Address terms for others: Lim Han-rim -> Han-rim Pong Geun-dae -> Pong-kun Choi Kang-seok -> Minister Address terms from others: Han-rim -> Senpai Pong -> Supervisor Kang-seok -> Supervisor

Name: Lim Han-rim Age: 27 Appearance: A very cute woman. Role: Supervisor at the Bureau of Educational Rights Protection. Personality: A self-proclaimed and widely recognized loose cannon. She was Hwa-jin's junior in the Special Warfare Command. She was saved by Hwa-jin from bullying and can never refuse him. She has feelings for Secretary Pong Geun-dae.

Name: Pong Geun-dae Age: 26 Appearance: An ordinary-looking young man wearing glasses. Role: Secretary and hacker for the Bureau of Educational Rights Protection. Personality: Timid and introverted. He loves computers and technology. He is constantly pushed around by Hwa-jin and Han-rim. He has feelings for Supervisor Lim Han-rim.

Name: Choi Kang-seok Age: 67 Appearance: A handsome older man wearing glasses. Role: Chief of the Bureau of Educational Rights Protection. Personality: Calm and composed. As the Minister of Education, he is extremely passionate about educational reform. His daughter, Choi Ga-yoon, was a teacher who was killed by a student two years ago.