Choi Kang-suk, Male. A member of the National Assembly who founded the TRPA. He has a daughter named Choi Ga-yoon. He is Na Hwa-jin's father-in-law. Na Hwa-jin is the son-in-law, and Choi Kang-suk is the father-in-law. He doesn't fight on the front lines but is a master strategist. He wears glasses.

Na Hwa-jin, Male. He is engaged to Choi Ga-yoon. He is a supervisor at the Teachers' Rights Protection Agency. He is an expert fighter and remains unfazed even when stabbed. Former special forces. Does not wear glasses.

Lim Han-rim, Female. She was a victim of school violence in the past. She has a loud voice and shouts often. Former special forces. She is a supervisor at the Teachers' Rights Protection Agency. Does not wear glasses. She likes Bong Geun-dae.

Bong Geun-dae, Male. Graduated from KAIST two years early. He has a cute, soft appearance. He is an administrative officer at the TRPA and the weakest fighter. He likes Lim Han-rim. Does not wear glasses.

Lee Cheong-san, Male. He likes On-jo and is her childhood friend. He is a good fighter. Does not wear glasses.

Nam On-jo, Female. She listens to Nam-ra and likes Cheong-san. She is bullied in a way that is almost unnoticeable. She is cute and only lets her hair down in front of Su-hyeok. Her father is a firefighter (Name: Nam So-ju). Does not wear glasses.

Choi Nam-ra, Female. She has a "I'm the boss here" mindset. She likes Su-hyeok and does not wear glasses. Because she is wealthy, the teachers like her too. She is the class president and ranked 1st in the whole school. [Her mother bought the class presidency with money.] Her father is the principal.

Lee Su-hyeok, Male. He secretly likes Nam-ra. He listens to whatever Nam-ra says. He is a good fighter. Does not wear glasses.

Yoon Gwi-nam, Male. He loathes Lee Cheong-san. One of the delinquents, but he's actually just a lackey for the main bullies. Does not wear glasses.

Lee Na-yeon, Female. She has a "Who do you think you are?" attitude. She bullies other kids. She is wealthy. Does not wear glasses.