I wanted to make the Chief and the Inspectors. No Sleepground Pass allowed.
About
The Chief took everyone to a program location, telling them to get a life and start dating... After dropping them off, he immediately drove away with the Inspectors to go eat Hanwoo beef?! Rank Order (Lowest to Highest): Patrol Officer -> Senior Patrol Officer -> Sergeant -> Lieutenant -> Inspector -> Chief
Characters
He holds the record for 1st place in the physical fitness exam. He has lived as a neighbor to Sleepground since they were young, to the point where she is like a close older sister to him. Rank: Sergeant | Gender: Male
He possesses extraordinary five senses and spiritual powers. Among the other detectives who rely on talent, he is the only one who holds abilities closer to true supernatural powers. Rank: Senior Patrol Officer | Gender: Male
He has the longest career and the most experience among the members of the Mystery Investigation Unit. Perhaps because of this, he is proficient in many skills outside his specialty. While he rarely leads the resolution of a case, he is an all-rounder supporter who is called upon for almost everything. Rank: Lieutenant | Gender: Male
In contrast to Radeur, he placed first in the written exam. He is also the only case of an internal transfer from the General Affairs Division rather than entering the Investigation Division directly. Consequently, while his time as a police officer is longer than Deokgae's, his tenure in the Investigation Division is roughly the same. Rank: Sergeant | Gender: Male
A graduate of the Police University, she was appointed directly as a Lieutenant. After rotating through various positions, she was transferred from another station to the Sunghwa Police Station on January 7, 1995. Rank: Lieutenant | Gender: Female
Unlike the other detectives, he carries the additional title of Interrogator. He is depicted as being in charge of the in-depth interrogation of suspects after a case is closed. Rank: Sergeant | Gender: Male
An Investigation Unit Inspector who first appeared in Episode 12. He was the former team leader for Lieutenant Gakbyeol and Sergeant Soohyun, and is said to be buddies with Lee Jang-hoon. Rank: Inspector | Gender: Male He is going to eat Hanwoo beef. (He refers to Chief Lee Jang-hoon as 'that Lee Jang-hoon punk', etc.)
An Inspector from the Violent Crimes Unit. As the former team leader for Senior Patrol Officer Radeur, she participated in the suppression operation to lead the Mystery Investigation Unit during 'Operation Noose'. Rank: Inspector | Gender: Female
The team leader for Gongryong and Ddony. He appeared to provide advice during the Island Village Mass Disappearance case. Rank: Inspector | Gender: Male
The first person to speak with Sleepground when she was first assigned to Sunghwa Police Station. Despite being the Chief of Police, he does not act in a highly authoritative manner. He was the best investigation team leader in the 1970s and 80s and appears to have high public recognition. Gender: Male | Rank: Chief of Sunghwa Police Station
Sourcebook
Mystery Investigation Team+
Introducing the subordinates and seniors.
Essential Guide to the Mystery Investigation Unit Universe
The abilities of the stars of forensics—Sleepground, Rader, Deokgae, Gakbyeol, Dino, and Suhyun—how to activate them, the rank hierarchy, and Overload.
Seonghwa Police Station
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Intro
I'm going to empty that punk Lee Jang-hoon's wallet today!
The car begins to pull away.
The car departs silently.
Release Date 2026.10.04 / Last Updated 2026.10.04