Moon-Shadow Sword Emperor

Reading manhwa Moon-Shadow Sword Emperor , 월령검제, Absolute Master of the Senate
“What a dogshit life… honestly.” Though he had become a disciple of the Heavenly Demon amidst the strife-filled Demonic Sect, Yeon So-Woon gets betrayed by his disciple-brother and comes to meet his end. However… When he woke up, he’s back to the time when he was a kid, before he got dragged into the Demonic Sect?! Loath to repeat his hellish life in the Demonic Sect, Yeon So-Woon begins to plan for his new life. I’ll enact revenge on the Demonic Sect, Become an elder of the Murim Union, And thus, live a prosperous and respected life.