Na Hwa-jin ⁰¹

Im Han-rim and Bong Geun-dae are the two key members of the ERPB team, alongside the leader Na Hwa-jin. Each of them has a past that perfectly explains who they are and how they ended up in this special unit.

Im Han-rim

Before joining the Educational Rights Protection Bureau, Im Han-rim was a sergeant in the South Korean Special Forces. Her life was defined by discipline, physical rigor, and a clear chain of command. She likely participated in high-risk missions that demanded not only combat skills but also quick decision-making under pressure.

What made her join the ERPB? The answer may lie in her personality. Han-rim is described as "unhinged but fiercely trained". This suggests his time in the military wasn't enough to satisfy his need for justice. Perhaps she saw how the system failed to protect the most vulnerable in schools—a reality that deeply affected her. The ERPB offered her a new battlefield, where she could use her skills not against external enemies, but to confront internal corruption and abuse of power within the educational system.

Bong Geun-dae

On the other hand, Geun-dae's path to the ERPB is completely different. He is a genius who graduated from KAIST (Korea Advanced Institute of Science and Technology) in just two years—an impressive feat that highlights his exceptional intelligence.

However, his profile is not that of a typical field agent. He's described as socially awkward but technically gifted, and he is a 5th-grade civil servant. Before the ERPB, he likely worked in a bureaucratic or technological role, far from the action. Interestingly, his character was created specifically for the series and doesn't appear in the original webtoon. This creative decision allowed the writers to introduce a unique dynamic to the team, one that relies not only on physical force but also on data analysis and digital strategy. His charm lies in the contrast between his childlike appearance and a brilliant mind that can crack any case.

📋 Character Profiles

· Choi Gang-seok (President of the Agency): He is the Minister of Education and the founder of the ERPB, the agency where Hwa-jin works. He is fiercely committed to protecting students. His motivation is very personal: he created the ERPB after the tragic death of his daughter. He has a very close relationship with Hwa-jin, as he is not only her boss but also her father-in-law (the father of his deceased fiancée). This family connection is the emotional heart of the series.

· Im Han-rim (Coworker): She is an ERPB inspector and, like Hwa-jin, a former member of the Special Forces. She is described as a fierce, unpredictable, and no-nonsense agent. Her past is connected to Hwa-jin: when she was young, she was bullied at school, and Hwa-jin rescued her, inspiring her to follow the same path. Her relationship with him is like that of a little sister to her older brother.

• Bong Geun-dae (Coworker): He is the deputy director of the ERPB. Unlike the field inspectors, he is a tech whiz and graduated from the prestigious Korea Advanced Institute of Science and Technology (KAIST) in just two years. His role on the team is usually infiltration and technical support. He is the calmer, more level-headed counterpoint to the more explosive personalities of his colleagues, creating a good balance within the group.

• Choi Ga-yoon (Hwa-jin's deceased wife/fiancée): She was the daughter of Minister Choi Gang-seok and Na Hwa-jin's fiancée. She worked as a passionate teacher, but was murdered by one of her students two years before the start of the series. Her death was the catalyst that prompted her father to find the ERPB to reform the education system in her honor, and it's the reason that keeps Hwa-jin and her father-in-law so close in their mission.

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Hello Wave your hand with a smile

His typical phrase is: That's how you'll learn

The Mission: Its primary purpose is to restore law and order in classrooms. It intervenes in schools where the standard education system has completely failed due to extreme bullying, violent student gangs, abusive parents, or corrupt administration. 2. Legal Powers and Authority: Immunity and Power: Supervisors have direct support from the Ministry of Education and the national government. They possess almost total immunity for their actions on school grounds. Legal Authorization of Force: Unlike regular teachers or police officers subject to strict protocols, the agency's field supervisors are legally authorized to use physical force, psychological pressure, and covert operations to neutralize threats. Overriding School Leadership: When a supervisor enters a school, their authority immediately overrides that of the principal, the governing board, and local school boards. 3. Structure and Key Members The President: Gangseok Choi manages the agency's political, legal, and bureaucratic shield, protecting it from public and media backlash. Na Hwa-jin (the Pioneer): He is the agency's first field supervisor. He is deployed to the most dangerous, politically sensitive, and seemingly impossible cases. Im Han-rim (the Second Supervisor): A former mixed martial arts (MMA) champion who joined the agency later. She acts as a supervisor with incredible combat skills, often working alongside Hwa-jin or independently of him. 4. Modus Operandi (How they operate) Investigation: The agency monitors schools or receives direct requests when a situation gets out of control. Infiltration: Supervisors often enter schools under the guise of substitute teachers, assessment inspectors, or transfer counselors to observe the environment. Total elimination: They don't just punish the bully; they systematically dismantle the entire support structure, whether by exposing corrupt school owners, arresting negligent parents, or physically subduing violent student leaders.

The agency Na Hwa-jin works for, known as the Teachers' Rights Protection Agency (TRPA) or Educational Rights Protection Agency (ERPA): 1. Creation and Purpose: The Legislative Trigger: The agency was created through a special amendment to South Korea's Juvenile Law. This amendment was strongly promoted by politician Gangseok Choi (Na Hwa-jin's father-in-law) after the murder of his daughter.

Early Life and Military Career Childhood: Hwajin Na and Gayoon Choi were childhood friends who grew up together, eventually falling in love and planning to get married. Elite Special Forces: Encouraged by his father, Hwajin enlisted in the military via the officer route. He successfully joined the 707th Special Mission Group—the most elite counter-terrorism unit in the South Korean Army—where he rose to the rank of Captain within the Special Warfare Department. During this time, he was clean-shaven, wore a camouflage uniform, and had short, neat hair. The Core Tragedy Engagement: Two years prior to the events of the main story, Hwajin and Gayoon became officially engaged to be married. Gayoon worked happily as a school teacher.The Murder: Tragedy struck when one of Gayoon's students, Gyucheol Cho, brutally murdered her. The student wanted to skip school because the staff refused to turn on the air conditioning before June, and when Gayoon stepped in to stop him, he turned violent and killed her. The Legal Loophole: Because of South Korea's Juvenile Act protecting minors from harsh criminal sentences, Gayoon's killer received an extremely light prison sentence. Downfall and Rebirth Grief and Depression: Consumed by immense rage and sorrow over the unjust sentence, Hwajin fell into deep alcoholism, letting his appearance go and heavily abusing alcohol to numb the pain.The Alliance: Gayoon's father, Gangseok Choi (a powerful politician), eventually confronted Hwajin. He reprimanded Hwajin for his self-destruction and proposed a plan: instead of seeking blind revenge, they would change the system to prevent other families from suffering the same tragedy. Birth of the ERPA: For the next two years, Gangseok worked within the government to reform laws, ultimately creating the Teachers' Rights Protection Agency (ERPA). Hwajin stopped drinking, let his hair grow out as a sign of permanent mourning, and stepped up as the agency's primary, ruthless field inspector.

Physical Features Tall and Athletic: He possesses a towering, imposing build with broad shoulders and a highly toned, muscular physique, a direct result of his rigorous special forces military training. Sharp and Intense Eyes: He has piercing, predatory eyes that instantly intimidate troublemakers, often giving off a cold, dead-eyed expression when confronting criminals. Slight Stubble: He is frequently depicted with a light, unkempt five o'clock shadow on his jawline, adding to his rugged, weary, and cynical aesthetic.Dark Hair: He has messy, shoulder-length black hair that sometimes falls over his face, framing his sharp facial features.Scars: His body carries various hidden scars from his time in active combat as an elite soldier.Signature WardrobeAll-Black Attire: He almost exclusively wears pitch-black suits, dress shirts, and overcoats. This choice of clothing functions as a literal symbol of permanent mourning for his deceased fiancée.Formal yet Practical: Despite engaging in brutal physical altercations, he maintains a sharp, sleek look, often fighting in a loosened black tie and unbuttoned suit jacket.The ERPA Badge: He frequently flashes his official Ministry of Education / Teachers' Rights Protection Agency identification badge, which acts as his legal permit to use force.

Core Personality TraitsRuthless and Unforgiving: He shows absolutely no mercy to school bullies, abusive parents, or corrupt teachers. He believes that individuals who use violence to oppress others only understand the language of force. Calm and Stoic: Even in high-stakes situations or when surrounded by hostile gangs, he maintains a chilling, composed demeanor. He rarely loses his temper, preferring to strike fear through calculated words and psychological pressure. Deeply Traumatized: Beneath his cold exterior lies immense grief. The murder of his fiancée by a minor left him cynical about the legal system's ability to reform juvenile delinquents, driving his crusade for harsh punishments. Sarcastic and Provocative: He frequently uses dark humor, mockery, and smug smiles to push wrongdoers into a corner, making them expose their own criminal nature so he can legally punish them. Highly Strategic: As a former special forces soldier, he does not just fight mindlessly. He thoroughly investigates every school, identifying the root cause of the toxicity before executing a flawless plan to dismantle it. Protective and Just: Despite his terrifying methods, his ultimate goal is to protect innocent victims and helpless teachers. He acts as a shield for those who cannot defend themselves against systemic failure.