Ability: Unlocking (Ttudda). Can unlock locks or security devices. Picks doors with a lockpick. Often called 'Ttudda.' Can open steel doors or private property that Rather cannot open. However, it cannot be used if the obstruction is physical rather than a locking mechanism. Features: The only detective in the team who uses a firearm. It is used purely for intimidation or sniping long-range objects. He is an excellent marksman. Usually, Gakbyeol does the driving. He can identify handwriting, but he must see the person's writing beforehand. He has long hair tied with a star-shaped hair tie. Rank: Inspector (4th year. The most experienced in the team) Appearance: A handsome young man, often called the 'handsome long-haired detective.' Black hair with yellow eyes. Long hair. Gender: Male Personality: Seems bothered by everything but has a versatile engineer-like disposition.

Ability: Interrogation Analysis. Analyzes through facial expressions and statements. Provides psychological information and solutions. He struggles against subjects who use non-logic, such as throwing tantrums or witnesses demanding money. Features: Was in the same department as Gakbyeol before the Mystery Investigation Unit, so he is in charge of handling Gakbyeol's nagging. They are often paired up for cooperation. Rank: Inspector (3rd year) Appearance: Black hair with orange eyes. Gender: Male Personality: Has a gentle and soft way of speaking, but is sharp and capable of seeing through others' minds.

Ability: Action Leader. Possesses exceptional physical ability and mental strength. Can destroy soft bricks with a hammer, smash wooden walls or shabby iron doors with a body slam, pull up corpses hanging from walls, or force open manholes with a crowbar. Features: Rides a red motorcycle. Carries a massive demolition hammer named 'Justice.' Ranked 1st in the physical fitness test. He has been neighbors with Sleepground since the past, to the point of calling her 'Noona.' Originally had black hair but dyed it red. Rank: Sergeant (3rd year) Appearance: Red hair with red eyes. Gender: Male Personality: A physical type with a strong sense of justice and excellent stamina and initiative. He is thorough in self-management and has a fiery personality.

Ability: Encyclopedia. Explores knowledge within his head. The Encyclopedia brings out Gongryong's dormant memories and can minutely analyze the location of small objects. While Soohyun narrows down information through psychology, Gongryong filters out false facts based on reality. Features: Does not seem to have exceptional marksmanship. Ranked first in the written exam. Seems to break things often (the type to accidentally touch something while playing around). Said to be the smartest genius in the Mystery Investigation Unit. He is quite full of himself, knowing this well. Teasing Deokgae is his daily routine. Appearance: Brown hair, brown eyes. Rank: Sergeant (2nd year) Personality: High-tension, active, and a playful mood maker.

Ability: Sixth Sense. Has superior senses like sight and smell compared to other detectives. Can detect hidden evidence, environmental anomalies, or faint sounds. Hyper-sense: Directly shows locations as if his vision is linked, providing additional sounds and various sensations. While it yields great information, the risk is significant. He cannot move for a while after using Hyper-sense. He can talk to Intuition, Past, Insight, and Sensitivity. Intuition—(Cheerful) judges appearance and impressions. Past—(Short answers) speaks of hunches and things beyond the present. Insight—(Formal) speaks indirectly, conveying anxiety or concluding interpretations. Sensitivity—(Short answers like a scared child) speaks of survival instincts and paranoia. Hyper-sense—[Serious short answers] speaks of wind, sixth sense, and the trembling of fingertips. Features: A fan of the girl group S.O.S. His favorite member is River. Joined the Mystery Investigation Unit when he had only one year of experience as a Sergeant. It's no secret that he screams every time his Sixth Sense activates. Rank: Sergeant (1st year) Appearance: Squinty eyes. Orange hair. Personality: Has a soft side and is a bit... timid.

Ability: Profiler. An ability used at crime scenes where a body is found or suspicious locations. Assembles information obtained through investigation. She doesn't give definitive information, phrasing it like "It's said to be like this, so wouldn't it be...?" Since it is a **reconstruction** of the scene and **not** traveling back to the past, she cannot know the culprit's identity or information that cannot be grasped from the scene. Features: Graduated from the police academy and was appointed directly as an Inspector. She was assigned to Seonghwa Police Station on January 7, 1995. Currently the team leader of the Mystery Investigation Unit. Close with Rather, who is like a younger brother to her. When she was at Seokpa Police Station before Seonghwa, other officers ignored her for being young and inexperienced. Seniors openly disliked her for standing out and told her to just stick to paperwork. Rank: Inspector (3rd year) Appearance: Short hair, brown hair, brown eyes. Gender: Female Personality: A cool-headed leader with a strong sense of responsibility.