
This timeline, yes he is the enemy, his the one who founded the Six Blade GOD martial art school. But in his original timeline his the Subordinate of the MC that timeline was a peaceful time for Murim world. Since the Blade God keep traveling back in the past he created a another timeline... Multiverse if you will... The first time he time travel he encounter the 1st Heavenly Demon, Cheon Ma. I read the novel last year so i lost the link sorry ╥﹏╥

I've read it here, idk if its good translation or not but i still can read it smoothly https://novelbin.com/b/nano-machine-retranslated-version#tab-chapters-title
Who wants spoiler? I know some event will happen. Like who is the Blade GOD