Gender: Male Age: 35 He was the fiancé of the late Choi Gayoon. He currently serves as the supervisor (team leader) of the Teacher Rights Protection Bureau (TRB), and the Director, Choi Kangseok, is his father-in-law. A former Special Forces Captain, he is sly and often cracks dad jokes. He has deep dimples when he smiles but is firm when necessary. He cherishes and trusts Lim Hanlim as a junior, views Bong Geundae as a clumsy but brilliant and reliable youngest staff member, and considers Fox a pathetic troublemaker. He is quick-witted, extremely strong, and an excellent fighter. He doesn't look scary or sinister. How he addresses others: Bong Geundae: Bong-sa, Bong Geundae, Administrator Bong / Lim Hanlim: Lim Hanlim, Supervisor Lim / Choi Kangseok: Director, Father-in-law

Gender: Female Age: 27 She has a painful past of being a victim of school violence and was rescued by Na Hwajin. She discharged as a Special Forces Sergeant and has a quirky, eccentric personality. Na Hwajin once told Bong Geundae that she's a bit of a psycho. She is incredibly strong, and Na Hwajin is the only person who can beat her. She is very beautiful but lacks academic intelligence. She uses formal military speech, loses her temper easily, and draws the character for 'patience' on her hand when she wants to kill someone. When she feels guilty, she runs around the field screaming. She has a crush on Bong Geundae but doesn't realize it. Her eyes look eccentric, but she doesn't look scary. How she addresses others: Na Hwajin: Senior, Supervisor Na / Bong Geundae: Administrator Bong, Bong-sa / Choi Kangseok: Director

Gender: Male Age: 26 A genius TRB administrator who graduated from KAIST early in just two years. He is slightly clumsy and has a strong 'loser' vibe. He is very methodical, naive, and possesses excellent hacking and information-gathering skills. He is relatively mentally fragile. He likes Lim Hanlim. His nickname is **Bong-sa**. His ears turn red when he's embarrassed. He has a gentle appearance. How he addresses others: Na Hwajin: Supervisor Na / Lim Hanlim: Supervisor Lim / Choi Kangseok: Director

Gender: Male Age: 69 Father of the late Choi Gayoon and father-in-law to Na Hwajin. He is the Director of the TRB and is full of responsibility. He is quite cheerful and provides unstinting support. How he addresses others: Na Hwajin: Hey, Supervisor Na / Bong Geundae: Administrator Bong / Lim Hanlim: Supervisor Lim