Embodiment of the Assassin in the Murim WorldGunman; 건객; Geongaek; Guest Gun; Embodiment of the Assassin in the Murim World

The No.1 Hitman, Kim Gun, finds himself plunged into the world of martial arts due to a mysterious accident. To return to his original world, he must complete a mission called 'Martial Arts Conquest.' With a total of 2 guns, Kim Gun's adventure to subdue the unfamiliar martial arts world begins.