Bi Ryu-yeon, a geek young man in his early 20s. When he was ten years old, when he became an orphan, he met his master and encountered the world of Moorim. By chance encountering the Cheonmuhakgwan officials, Bi Ryu-yeon’s fate changes… . The adventure begins with Bi Ryu-yeon and the geek master who appeared in Moorim with the scent of mukgeum and ferrets, and the unpredictable absolute martial arts and journey until the last moment.
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