The Villainous Immortal Emperor Returns, Crushing All Heavens for Eternity

[Villain + Invincible from the Start + Yandere Empress (But No Heroine) + Betrayal + Not for the Saintly] “In this vast world, mortals are mere weeds. Eighty billion people are nothing... If they can help me ascend to Immortal Emperor, they should consider it an honor for three lifetimes!” Xue Fan, the Immortal Emperor of Ten Thousand Abysses, sacrificed eighty billion people to attain the throne of Immortal Emperor. His disciple Mu Chunhan later betrayed him, and he died in the Holy War Against Demons. But eighty thousand years later, he came back to life and obtained the Villainous Immortal Emperor System. But... he killed the System right from the start! System: “Nice!” But when he discovered that the Children of Destiny also had Systems, Xue Fan was delighted. Child of Destiny: “You said you were going to build up your strength before making your move. How come you're already an Immortal Emperor?!” “Is he your father? Excellent... you don't have a father anymore.” He kills someone's parents and then takes their child in as his sworn younger sister, torments the Children of Destiny, uses his clones to seduce the merciless Empress who is his own master, and catches the eye of a yandere. Everyone around him is a tool to be used and discarded. Even the people dearest to him... are worth only a moment's hesitation. Isn't this a little too villainous?! But Nuwa mends the cage, Shennong tastes a hundred herbs and cuts off the source of life, and Huang... so who is the villain, after all?