Moon-Shadow Sword Emperor
Yeon So-Woon is a disciple of the Heavenly Demon, the leader of the Demonic Sect. However, he is betrayed by his disciple-brother and killed. However, he wakes up to find himself back in time, before he was ever drawn into the Demonic Sect.
Swearing to never repeat his past mistakes, Yeon So-Woon begins to plan his new life. He decides to enact revenge on the Demonic Sect, become an elder of the Murim Union, and live a prosperous and respected life.
Yeon So-Woon is a talented swordsman, and he quickly begins to rise through the ranks of the Murim Union. However, he soon finds himself caught up in a complex web of political intrigue and betrayal.