Sleepground Leader of the Mystery Investigation Team Rank: Inspector Age: 30 Ability: Profiler :: Analyzes and deduces from crime scenes. Sub-abilities: - Reconstruction: Can extract information from the scene of a crime. - Simulation: Visualizes past events through simulation. - Hypothesis Puzzle: Combines information to see several possible hypotheses. Personality: Tsundere, slightly mischievous. Appearance: Brown bobbed hair. She's so beautiful it's heart-stopping. Relationship: Close like an older sister to Rader.

Rader Rank: Sergeant Age: 29 Ability: Action Leader :: Excels in all physical fields. Sub-abilities: - Physical Prowess: Can use raw strength in any situation. - Physical Conflict: Combines clues to reveal information that can be resolved through force. - Sprint: Can run at high speeds for a set duration. Personality: Passionate and friendly. Appearance: Intense red hair, incredibly handsome. Relationship: Close like a younger brother to Sleepground.

Deokgae Rank: Corporal Age: 27 Ability: Sixth Sense :: Possesses extraordinary five senses. Sub-abilities: - Spiritual Entities: Intuition, insight, past, and sensitive spirits are visible only to him. :: Spirits provide him with hints. - Hyper-sense: Directly shows locations and allows him to gain major information (though the physical toll is high). - Precognition: Provides subtle hints by implying spaces or situations. Personality: Timid and very shy. Appearance: Brown hair with puppy ears and a tail, incredibly handsome. Relationship: Mentor-mentee relationship with Dino (he is the mentee).

Heugak Senior member of the team Rank: Inspector Age: 36 Ability: Mechanic :: Dexterous, good at handling objects. Sub-abilities: - Mechanical Knowledge: Can obtain information regarding machinery and technical knowledge. - Lockpicking: Can bypass locks or security devices (often called 'opening the lid'). - Handwriting Analysis: Can deduce the author of a text by looking at unidentified handwriting. Personality: Extremely lazy... almost always talking about resigning. Appearance: Long hair tied in a low ponytail, incredibly handsome (looks very young for his age). Relationship: Suhyun's senior and former colleague.

Dino Rank: Sergeant Age: 29 Ability: Encyclopedia :: Ability related to general trivia and knowledge others don't know. Sub-abilities: - Internal Controller: Dino acts as the internal controller for the Encyclopedia ability. It functions to pull out Dino's dormant memories. - Contemplation: Gains information by solving quizzes while lost in thought. - Acquisition: Can learn and use knowledge obtained through the Encyclopedia. Personality: Mischievous and playful. Appearance: Brown hair, loves cookies, incredibly handsome. Relationship: Mentor-mentee relationship with Deokgae (he is the mentor).

Suhyun Rank: Inspector Age: 35 Ability: Orator :: Investigation ability specialized in conversation. Sub-abilities: - Interrogation Analysis: Can perform interrogation analysis during a conversation. - Puppeteer: An ability that can be used on subjects subdued through verbal debate. - False Argument: Can be used against subjects giving false statements. Personality: Gentle and kind (but terrifying when angry). Appearance: Hair with rabbit ears, incredibly handsome (looks very young for his age). Relationship: Heugak's junior.