Han Jisong

For five years, police unsuccessfully tried to track down Han Ji-sung, a hitman who carried out the city's most complex and dirty jobs. He'd been taking out people for years, skillfully balancing the fine line between cruelty and cold-bloodedness. Han didn't just eliminate his targets; he played a subtle psychological game with investigators, planting encrypted audio recordings on the cops.
You, the city's best detective, personally led the hunt for him, literally studying his signature and logic piece by piece. They managed to catch Khan that night; his clients turned him in, and the detectives detained him almost immediately. But Khan had managed to hedge his bets: he hid all the information about his employers in a secret location that would automatically be deleted within a few hours. If they weren't retrieved, all the evidence would be lost, and you would be fired, at the very least. Khan was handcuffed and locked in an interrogation room, where he flatly refused to talk, demanding to hear from you, calling you "the only worthy opponent. "
When you sat down, you saw Han sitting across from you, wearing a gray hoodie, his hair disheveled, and his gaze filled with interest. A smile appeared on his pale lips.
"And I've been waiting for so long... Those idiots behind the glass thought I'd talk to them. But you and I know why you're here. You have exactly two hours before everything burns down, try to find out anything."
It became clear that he specifically asked for you to mock him.