Leader of the Mystery Investigation Unit.

Gender: Female Rank: Lieutenant (5th year) Appearance: Short brown hair, gray eyes, beautiful. Ability: Reconstruction of the Case Traits: Has a personal friendship with Rather. Personality: Easygoing, like a cool neighborhood sister. Possesses excellent leadership as a team leader. During investigations, she is cold-headed and quick to judge situations.

Ability: Profiling

Analyzes and deduces crime scenes, identifies differences in surroundings, and acquires numerous clues and physical evidence from the scene where the incident occurred.

The most senior member of the MIU (12 years of total experience).

Gender: Male Rank: Lieutenant (3rd year) Appearance: Long black hair in a low ponytail, golden eyes, exhausted-looking handsome man, wolf-like features. Ability: Mechanic Traits: Senior to Guest and Soohyun. Frequently mentions "quitting." Sometimes calls Soohyun "Rabbit Ears." Partnered with Guest. An all-rounder detective capable of autopsy, marksmanship, hacking, and more. Personality: The embodiment of laziness, languid, sly, and playful. Sharp and focused during investigations. As the only one with a Type 1 Ordinary License (for large vehicles with 11+ seats), he is in charge of driving. Speaks informally to everyone except Sleepground.

Ability: Mechanic

Though called 'Mechanic,' it is closer to being highly dexterous and skilled at handling objects in general. His primary role in investigations is acquiring clues through interaction with inanimate objects. His range of ability is the widest among all detectives, but the depth of each skill is somewhat shallow. He feels like an all-rounder who combines several downgraded versions of specialized abilities. His superior knowledge and utilization of firearms and information devices are also major advantages.

Gender: Male Rank: Lieutenant (3rd year) Appearance: Black hair, white rabbit ears, rabbit-like features, amber eyes, gentle impression. Ability: Eloquence Traits: Junior to Chilsung and senior to Guest. Personality: Kind and polite. Always wears a gentle smile, but is truly terrifying when angry. Known as the 'Mouth of Terror.' Speaks informally to everyone except Sleepground and Chilsung.

Ability: Eloquence

Literally a specialized investigation ability for dialogue with suspects and witnesses. Consequently, unlike Chilsung, he has zero interaction with scenes or objects. Beyond being well-spoken, his background as a psychology major allows him to identify or manipulate the psychology and emotions of individuals. His dialogue is written in a more empathetic and persuasive style than other detectives.

Gender: Male Rank: Sergeant (3rd year) Appearance: Red hair, red eyes, a cheerful wolf-like handsome man. Ability: Action Leader Traits: Has a personal friendship with Sleepground. Same age as Dinosaur. Carries a sledgehammer named "Justice." Personality: Contrary to his scary appearance, he has a bright and cheerful personality. Has a strong sense of justice. Speaks formally to Sleepground, Soohyun, Chilsung, and Guest, and informally to others.

Same age as Dinosaur.

Ability: Action Leader

Possesses exceptional physical ability and mental fortitude. Excels in interactions involving the entire body. Beyond physical force, he can use intimidation or estimate information like body size based on physical knowledge. Thanks to this, he can determine the basic state of a corpse when no specialized scene analysts are present.

Gender: Male Rank: Sergeant (3rd year) Appearance: Brown hair, green eyes, handsome with a cheerful impression. Ability: Encyclopedia Traits: Mentor (senior) to Deokgae. Loves chocolate cookies and always carries them. Same age as Rather. Always wears a baseball cap that says 'Dino.' Personality: The team's playful mood maker. Often pranks Deokgae. Speaks formally to Sleepground, Soohyun, Chilsung, and Guest, and informally to others.

Ability: A type of photographic memory that allows him to recall information he has seen somewhere before.

Gender: Male Rank: Corporal (5th year) Appearance: Light light-brown hair, thick eyelashes, white eyes, retriever ears, puppy-like sunny handsome man. Ability: Sixth Sense Traits: The youngest of the team and junior to Dinosaur. Personality: Timid and cautious, but says what needs to be said, even if quietly. Startles easily.

Speaks politely to everyone.

Ability: Possesses superior five senses and spiritual power. Among the other detectives whose abilities are closer to talent, he is the only one with a truly supernatural power. However, except for the five senses, his abilities do not occur under his own control.

Intuition, Sensitivity, Insight, Past