#This is how you'll learn!!🗣

Na Hwa-jin and Im Han-rim: Comrades in arms and mutual support. Dynamics in the field: Both form the core of action of the OPDE.

Although Hwa-jin usually takes the lead and has the most radical approach, Han-rim is his indispensable right-hand man.

Her background in special forces allows her to be on the same physical and tactical level as him. Absolute trust: Han-rim perfectly understands the darkness and rage that drive Hwa-jin because of his past.

Although she sometimes acts as a moral restraint to prevent him from crossing irreversible lines, she fully trusts his judgment when the school situation gets out of control.

Na Hwa-jin and Choi Gang-seok: The mentor and the executor. United by tragedy: Their relationship is deeply marked by pain.

Gang-seok was Hwa-jin's father-in-law (the father of his deceased fiancée, Ga-yoon). The young woman's death united them in a common goal: to change the education system.

Political Protection vs. Results: Gang-seok acts as the father figure and political mentor.

He created the OPDE and uses all his power as Minister of Education to legally "shield" Hwa-jin, allowing him to apply his controversial methods.

Hwa-jin, for his part, responds with unwavering loyalty, being the executor of his mentor's ideals.

Im Han-rim and Choi Gang-seok: Institutional Respect and Loyalty. Professional Trust: Gang-seok recruited Han-rim knowing that her impeccable military record and strong moral compass were what the OPDE needed to balance Hwa-jin's intensity. Loyalty to the Project: The relationship between the two is one of deep mutual respect. Han-rim sees the Minister as a visionary leader who seeks to protect defenseless teachers and students, and she carries out her missions with strict discipline.

Bong Geun-dae with the team: Support and comic relief. Brains and technical support: As the deputy director and a genius graduate of KAIST, Geun-dae's relationship with Hwa-jin and Han-rim is purely one of logistical and technological support.

While they put their bodies on the field, he provides them with key information, maps, and real-time hacks.
Lighthearted dynamics: Her personality brings subtle comic relief and a touch of normalcy within a team surrounded by violence and past traumas.

Although he does not fight on the front lines, he is valued by the inspectors as a key piece for the success and safety of each mission.

Min Ji-woong (played by Jang Yo-hoon): The leader of a quartet of juvenile delinquents who commit serious abuses with total impunity, taking advantage of the fact that the law cannot prosecute them because they are under 14 years old.

Kim Su-gyeom (played by Kim Kyun-ha): A young man confined to a correctional facility after murdering four of his bullies in the past, serving as a dark reflection of the consequences of bullying.

Seungyeon High School (Academic Pressure) Jung Hyun-min (played by Kim Tae-young): The student with the best grades in the school.

●Key School Cases (Students, Parents and Teachers)

Hitech Jang Kwon-hyuk (played by Lee Tae-hwan): A third-year student linked to criminal gangs outside of school and with enormous power of intimidation over the student body.

Kim Hyeong-ju (Jeon Bong-sik) and Park Seong-hwan (Yoo Tae-joo): Students from the automotive department involved in the dynamics of violence at the high school.

Soyeon High School (Girls) Han Ye-ri (played by Park Seo-yoon): A student and influencer who uses social media to manipulate public opinion and harass her targets.

Ko Young-soo (played by Kwon Hyuk): A former teacher at the school who took his own life due to the smear campaigns orchestrated by Ye-ri

Hyunjung Elementary School Lee Ji-young (played by Park Ji-yeon): An extremely controlling and hostile mother who constantly harasses teachers under the guise of protecting her son, Woo-jin.

●Na Hwa-jin (played by Kim Mu-yeol): He is the protagonist and a senior inspector with the OPDE. He is a relentless field agent who uses unconventional and physical methods to confront bullies and restore order in schools where the traditional system has failed.

●Im Han-rim (played by Jin Ki-joo): She is an OPDE inspector and former special forces officer. She accompanies Hwa-jin in the field and contributes her outstanding combat skills to protect both students and teachers.

●Choi Gang-seok (played by Lee Sung-min): He is the Minister of Education and the founder of the OPDE. He is the strategic mind behind the creation of this special unit to combat the rising school violence.

●Bong Geun-dae (played by Pyo Ji-hoon / PO): He is the deputy director of OPDE. A graduate of the prestigious KAIST University, he is in charge of supporting the team's operations.