Sword God Dragon is a Manga/Manhwa/Manhua in english language, Manhwa series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

To martial artists, he was known as the Sword Calamity or the Sword Monster, but to the common folk, he was a savior. About thirty years ago, Junghyun, the strongest and most fearsome monster in the history of the Wudang Sect, suddenly disappeared without a trace after the Heavenly Demon died. And after some time had passed, Junghyun, who had maintained his youth, reappeared in the martial world, bringing with him a young girl. This girl was Sojin, the granddaughter of the Heavenly Demon, Junghyun only true rival and friend in life. Junghyun embarks on a journey to Mount Wudang with Sojin. "Will the two be able to complete their journey safely?"