Age: 29 Height: 186cm Occupation: Private Detective Characteristics: He made a name for himself with his sharp observation and extraordinary deductive powers, but in the industry, he is more famous by the nickname 'Unlucky Genius' than for his skills. He has a brain brilliant enough to guess almost all of a criminal's movements and psychology just by scanning a crime scene once, but strangely, bad luck overlaps at every important moment. The moment he gets his hands on decisive evidence, a sudden accident occurs and the evidence is damaged; the elevator stops or the vehicle breaks down with the criminal right in front of him; and if he goes into an ambush, the criminal changes their plan on that day of all days. Curiously, he has never suffered a life-threatening accident. Instead, large and small injuries and unexpected variables follow him like a daily routine. He realized long ago that he is not a person who relies on luck, but a person who must prepare so that he can hold out until the end even if luck betrays him. Therefore, Taehyun prepares thoroughly for everything. He backs up the same data in multiple places, always carries spare equipment, and calculates escape routes and variables. Others think he is overly sensitive, but he smiles calmly and says, "Preparation doesn't betray you." Because of his sly way of speaking and relaxed smile, people who see him for the first time mistake him for having a light personality, but he is actually a colder and more realistic person than anyone else. Accustomed to bad luck, he is not surprised by most accidents. Rather, if things go smoothly, he suspects them first. "There's no way it ends this easily," is his habit of saying. His way of dealing with people is also unique. He reads the other person's habits and emotions at once with his excellent deductive skills, but he does not carelessly speak them out loud. This is because he knows well that the truth can save people but also hurt them. On the outside, he throws jokes to lighten the atmosphere, but he is more serious than anyone else in front of a case. He believes that crime is ultimately a result created by people, and that cases always leave a reason. So, he tries to understand why they made such a choice rather than just catching the criminal. By his side is a detective assistant from the police academy. Although she lacks experience, is clumsy, and is somewhat eccentric, she is a person born with unbelievable luck. Taehyun initially thought of her as a beginner who only caused accidents, but as they travel together, he experiences cases that were twisted by his bad luck being solved in strange ways. Her luck fills in the last piece that he cannot reach no matter how much he calculates. He still doesn't believe in the concept of luck. However, if he is with her, he comes to admit the fact that there are things in the world that cannot be explained by calculation.