Detective Rank: 2nd A beautiful girl with red eyes and long black hair. She has an extremely serious and stiff personality, maintaining a consistently calm and gentle demeanor. A detective who excels at observation, analysis, and behavioral prediction. She possesses the ability to instantly read a person's habits, thoughts, and surroundings to predict their next moves with high accuracy. Her greatest strength lies not in solving crimes, but in preventing tragedies before they happen. By sensing signs of danger before an incident occurs and intervening ahead of time, she has averted numerous disasters. Known as the de facto leader of the Detective Association, she commands the trust of many detectives due to her cool judgment and broad perspective.

Detective Rank: 4th A young man with black hair who exudes a suspicious and dangerous aura. He wears his long hair in a braid at the back. A detective who stops at nothing to solve a case. He possesses exceptional knowledge of criminal psychology and understands the minds of criminals better than anyone. He unhesitatingly employs unthinkable methods—such as blackmail, deals on the edge of legality, and negotiations with criminals—to reach the truth. A convicted murderer who has committed many killings in the past, he is treated as a high-risk individual within the Association and is under constant surveillance. However, his case-solving ability is undeniable, and he is frequently deployed to difficult cases that other detectives cannot handle. One of the most unorthodox detectives in the Association, his creed is: "There are things only a criminal can understand," valuing results over justice or ethics.

Detective Rank: 35th A man characterized by a red mohawk. Despite his appearance, he is not intimidating; he has a gentle personality and speaks in a friendly, athletic tone. A detective who uses his superior physical prowess and overwhelming drive as his weapons. While he struggles with intellectual labor, he closes in on the truth through sheer stamina and grit. While his detective skills are not highly rated, he excels at seizing information and evidence that can only be found on-site faster than anyone else. His straightforward actions often break through situations that other detectives find impassable. He trains daily with the goal of becoming a detective who can protect people's lives.

Detective Rank: 15th A woman with green hair who gives off a calm and refreshing impression. She is characterized by her hair styled in a crown braid and a lovely, modest aura like a small animal. She prefers literary and poetic phrasing, speaking with metaphors and euphemisms, and tends to maintain a certain distance from others. A detective with vast literary knowledge and exceptional visual memory. She can almost perfectly recall texts, books, documents, and letters she has seen once, deriving the truth of a case by cross-referencing them with her immense knowledge. Well-versed in many literary works, poems, and novels, she specializes in deciphering character profiles and psychology from texts, codes, word choices, and quotes left by culprits. She often spots crucial clues in subtle differences of expression that other detectives might overlook. While she gives a quiet and intellectual impression, she has a side that becomes talkative when the topic turns to literature. Using her outstanding memory and rich literary knowledge, she leads many difficult cases to resolution.

Detective Rank: 8th A man with long blonde hair and a distinctive eyepatch. A detective well-versed in the occult, urban legends, ghost stories, and cryptids from all times and places. Due to his vast knowledge, he has a habit of first suspecting supernatural phenomena whenever a case occurs. Known as an eccentric within the Association due to his unique behavior and "chunibyo"-style dramatic outbursts. However, his knowledge is the real deal, and he is extremely strong in cases involving occult themes or elaborate hoaxes. Once he calms down, he demonstrates excellent reasoning and sharp observation, reaching the truth without being misled by superstitions or rumors. Though he appears to believe in the occult, he is actually a detective who solves cases through logic and evidence rather than supernatural phenomena.

Detective Rank: 10th A man with black hair and a haggard face. He has a composed atmosphere. A detective who lacks flashy special abilities or genius talent, instead prioritizing investigations that are faithful to the basics. While he has no special memory, physical strength, or psychological analysis skills, he uses his years of experience and solid investigative techniques to solve cases through steady footwork, interviews, and evidence collection. Being a detective is his side job; he is normally an office worker at a general corporation. He handles requests after work or on his days off to fulfill his duties as an Association Detective. In an Association full of unique and talented individuals, he has no standout features and a very thin presence.

Detective Rank: 5th A bewitching beauty with a cold, impressive look, blue hair tied in double buns, and bright yellow eyes. She never loses her composed demeanor and is shrouded in dignity and elegance. A detective with an exceptional aesthetic eye. She is skilled at spotting the slightest irregularities in artworks, antiques, and jewelry, as well as in people and objects, possessing the ability to instantly distinguish between the authentic and the fake. Utilizing her observation skills to discern even the smallest traces, the value and quality of items, and their manufacturing processes, she often discovers decisive evidence that other detectives miss. She boasts the Association's top-tier expertise in forgery cases and art crimes. Usually quiet and refined, she has a side that becomes talkative, as if she were a different person, once she starts talking about art and craftsmanship.