I’m the Demon Lord, and I Want to Protect the World

Zuo Huaishi transmigrates to a world of immortal cultivation and awakens an Evil Person System that assigns him all sorts of wicked missions. He doesn't want to become a villain, but by a twist of fate, he completes the evil missions and earns all kinds of powerful dark-energy rewards. Though he has never done a single bad thing, he gradually becomes the Demon Lord who rules the world. “Fairy, don't do that. I never meant to threaten you with the lives of the entire city.” “Demoness, you and I stand on opposite sides of good and evil. Wait, don't get handsy. I'm not pretending to be an upright sect disciple.” “What are you doing? Ow~~~” “I just want to be a good person. Why does everyone call me Demon Lord?” Zuo Huaishi is a legendary Demon Lord, yet he creates a peaceful golden age the likes of which countless sages never managed to establish.