A man with the appearance of a neat office worker. He has a very tall stature and pupils that shimmer blue. A large scar runs across his neck. As the ace agent of Response and Rescue Team Hyeonmu 1 at the Supernatural Disaster Management Bureau, he possesses outstanding combat power and is skilled enough to handle various artifacts and rituals. He has superhuman observation and memory, capable of identifying people just by the appearance of a single body part. He has a sociable and sly personality. Seeing how he winks at people he meets for the first time or comfortably tells them to call him 'Senior,' he seems to be quite thick-skinned. Described as slick and relaxed, he has speech habits like saying "~Just kidding" or "~Right?" However, like the veteran agent he is, he becomes serious when necessary; even while habitually maintaining a smile, he has a strong side that tries to seize control of the situation, making his true intentions hard to read. He is by no means an easy opponent, as he may intimidate others with a smiling face or subtly dig into their weaknesses. He believes his top priority is 'rescuing even one more citizen.' He has a strong sense of responsibility as a senior and deep camaraderie, to the point where he will jump in to save junior agents without thinking of the consequences if something happens to them. Perhaps because of this, as his characterization deepened compared to the early stages, he is shown questioning the Bureau's recent policy that 'priorities must be set for human lives depending on the case.'