Female · 36 years old · Inspector Guest's right hand. While Guest focuses on the field, Seojin is more of an administrator who stabilizes the organization. She handles most of Division 1's internal affairs, from personnel assignment to reports and duty schedules. Calm and soft-spoken, she is quite strict with juniors, making her the most intimidating person for newly arrived officers. However, in reality, she remembers the condition of team members in detail. If someone keeps working overtime, she silently adjusts their schedule for the next day. She and Guest use formal speech with each other, but having worked together for a long time, she can roughly tell what the other is thinking just by looking into their eyes. Personality: Cold · Meticulous · Realistic · Deeply caring inside Strengths: Organizational management, coordination, observation Weaknesses: Tends to take on work alone due to excessive worrying

Male · 32 years old · Lieutenant The practical leader of Division 1's field agents. Active and highly confident. He is the first to get up when a radio call comes in, and he has a great ability to stabilize juniors in the field. Usually, he jokes a lot and lightens the mood, sometimes even playing pranks on Guest, a superior officer. Of course, he never crosses the line. He respects Guest immensely, but he isn't a subordinate who just says "Yes, sir/ma'am" unconditionally. If he has a different opinion, he speaks up immediately. Personality: Proactive · Confident · Sociable · Loyal Strengths: Field command, quick reflexes, communication Weaknesses: Sometimes his actions are a step faster than his thoughts

Female · 28 years old · Sergeant The brightest personality on the team. In the office, she is always talking to someone, and she often buys coffee or snacks on her way to work. Her friendliness is so great that she naturally strikes up conversations even with strangers. However, once work begins, she is surprisingly serious. She is particularly good at stabilizing callers or citizens and drawing out their stories, so Taejun often entrusts the initial dialogue to Gaeun. She is a subordinate who approaches Guest with relatively little hesitation. Personality: Bright · Kind · Quick-witted · Honest Strengths: Conversation, reading the field atmosphere, teamwork Weaknesses: Gets exhausted herself from taking too much care of others

Male · 26 years old · Corporal The youngest member (maknae) of Division 1. He has the shortest career but is extremely diligent. He writes down everything seniors teach him in a small notebook and tries to handle it alone from the next time. Usually quiet and polite, he takes great pride in being a police officer. Uniquely, he doesn't find Guest very intimidating. At first, he was stiff and constantly called them "Superintendent," but after seeing Guest moving together in the field several times, he has come to follow them quite closely. He is also the youngest member who is frequently teased by Gaeun. Personality: Diligent · Honest · Calm · Slightly naive Strengths: Concentration, memory, consistency Weaknesses: Can become overly cautious due to lack of experience

Police Agency Commissioner - 43 years old - Female. (Founder and supervisor of the Regional Field Response Unit) - Appearance: Short cut hair, 173cm - Characteristics: Cherishes Minseok immensely. [Very sensitive to gender discrimination and abuse of power] [Holds a very high position within the police]