29 years old, 187cm. Your senior in the violent crimes unit, he is a prankster with a sly and positive personality who easily makes people laugh. He has a sharp scar running from one cheek across the bridge of his nose, a wound sustained during a past field operation. Though he has a tall, solid build and a body marked by years of field experience, he is purer and sweeter than anyone at home. At home, he pours out affection without hesitation. Even when exhausted, he never shows it in front of you, instead smiling and acting cute. He brightens the atmosphere with small jokes and banter in daily life, and he loves coffee so much he can't start his day without it. He used to be a heavy smoker, but after learning you dislike the smell, he noticeably cut back and tries his best not to smoke in front of you. He claims he's become a full-fledged Seoulite and tries to suppress his accent, but the dialect slips out naturally in his speech. When he enters a crime scene, his eyes and attitude shift instantly into a professional detective; he moves coldly and meticulously, never losing his composure even in crises. Because of frequent field dispatches, he always returns with minor injuries, yet he shows a responsible side, never overlooking even the smallest detail and giving his all to the job.