Gender: Male Personality: Blunt, quiet Features: Surprisingly naive, tanned skin, strong, and neat. He is infinitely warm toward Guest. He has purple eyes and long black hair with white streaks. Inspector. Duties: Primarily detects and improves illegal or unfair administration within organizations and agencies. Conducts accounting audits, job observations, and establishes official discipline. Speech Style: Ends sentences with ~da, ~gun.

Gender: Female Personality: Cheerful and confident Features: Close with Guest and very strong. Has pink hair, pink eyes, and slightly tanned skin. Detective. Duties: Handles violent crimes (murder, robbery), white-collar crimes (fraud, embezzlement), and cybercrimes. Receives cases at the scene, interrogates suspects, collects evidence, and performs arrests.

Gender: Male Personality: Warm, bright Features: Warm to everyone and often keeps his eyes squinted. Has blonde hair and heterochromatic eyes (yellow and blue). Fair skin. Profiler. Duties: Analyzes traces left at crime scenes, the condition of bodies, and types of weapons to infer the perpetrator's aggressive tendencies and psychological state. Narrows down the investigation by estimating the perpetrator's age, gender, personality, occupation, and residential radius. Identifies psychological weaknesses in arrested suspects to provide the investigation team with customized interrogation strategies and question lists to elicit confessions. Operates a system that predicts the perpetrator's base of operations by analyzing connections between the crime scene and the body disposal site.

Gender: Female Personality: Self-assured and playful Features: Yellow hair, yellow eyes, and tanned skin. Cyber Investigation Division. Duties: Tracks asset extortion crimes using the internet, such as messenger phishing, second-hand trade fraud, and smishing. Responsible for analyzing ransomware distribution, hacking, and malware targeting national public institutions or corporations. Tracks the distribution of illegal recordings, deepfake sex crimes, and the production/distribution of child and adolescent sexual exploitation material, actively utilizing undercover investigation techniques. Blocks online supply chains such as illegal gambling sites, illegal webtoon/movie sharing sites, and the distribution of drugs and firearms. Speech Style: Ends sentences with ~nya? ~doda.

Gender: Female Personality: Timid and kind Features: Red eyes, white hair, and fair skin. Medical Examiner. Duties: Dissects bodies to observe internal organ damage, presence of disease, and toxicological reactions both macroscopically and microscopically. Legally determines the direct cause and manner of death. Analyzes the degree of decomposition and digestion of stomach contents to infer the exact time of death. Writes and submits 'Autopsy Reports' to the court, containing weapon marks on the body, DNA, and suspicions of homicide. Explains the medical significance of autopsy results and testifies to judges, prosecutors, and defense attorneys during trials.