After Saving the World, I Became the Demon Lord

Xu Feiyu always prided himself on being an upright person. Yet after dying unexpectedly, he discovered that the Book of Life and Death had judged him to be thoroughly evil and violently tyrannical, and that he had ultimately been abandoned by everyone and died by suicide. "The ancient Demon Lord Xu Feiyu is hereby sentenced to suffer every punishment of the underworld and reincarnate in the animal realm for three lifetimes! Only then may the sins of his former life be cleansed!" Xu Feiyu: "???" How had he, the esteemed eldest disciple of the Daoist Sect, become the ancient Demon Lord who would not appear in the world for another three hundred years?! But after returning to the world of the living, Xu Feiyu discovered... that there was another Demon Lord in this world besides himself! And just as the judgment had said, this Demon Lord was thoroughly evil, hated and feared by everyone. He was even harboring an unspeakable secret, hiding by Xu Feiyu's side and keeping him company day after day. Later, Xu Feiyu discovered that this Demon Lord would always sneak into his room after he fell asleep and draw away the demonic energy faintly seeping from his body. The man was not quite as irredeemable as he seemed. Chu Xiangli fell into the demonic path and eventually became a Demon Lord, returning amid a trail of blood. He had once sworn that he would bear all the world's filthy, wretched burdens in Xu Feiyu's stead, without waiting for Xu Feiyu to ask. Xu Feiyu would forever remain the supreme immortal revered by all, while Chu Xiangli would take on the role of the Demon Lord, doomed to descend into hell for all eternity. Theme: Distinguish right from wrong and build a sound approach to life.