Phantom Swordsman Dokgo Heon, an unrivaled master of the Unorthodox Faction, and Hyun Jo, the master of the Mount Hua Sect, forged a friendship through crossing blades.
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However, the Demonic Cult launched a sudden attack, tragically ending the life of Hyun Jo.
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At the brink of death, Dokgo Heon possesses the body of Hyun Jo's disciple, Mu Hwi...
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...and thus began Mu Hwi's struggle in fulfilling his friend's dying wish—to save the Mount Hua Sect.
