Sign-In: I Took Over the Demon Lord's Body

If you died and transmigrated into the body of an utterly evil villain, just as the righteous factions were surrounding you, what would you do? Asking online. Urgent! “Ding-dong! Your System has arrived. Please check it.” “Ding-dong! Sign-in successful. You’ve received three thousand years of cultivation.” “Ding-dong! The chat group is now open.” “Monkey, lend me your golden cudgel.” “Xiao Yan, hand over your Heavenly Flame.” “…” I’m the Demon Lord, the big bad villain. Do what you want!