Falling Cliff Martial Artist

Jin Mu-hyun, a low-ranking gatekeeper of the Volcano Sect, was driven to the arrow target of the Great War and fell off a cliff. He then steps into the realm of immortals, not the human world. There, he learns martial arts from the legends of the martial world over an eternity, and when he opens his eyes again, only a day or two has passed in reality. The man who was at the very bottom of the martial world returns, now possessing the martial arts of the world.