What Happened to the Reborn Villain Demon King Who Forcibly Married the Empress?

[Villain Demon Lord + Reborn Empress + Decisive Killing + Overwhelm the World + Obliterate the Son of Destiny] Traveling through the fantasy novel, Gu Xuan became the prince of Dayu, with a distinguished status and a noble person in the sky! My father is a powerful person in the Holy Realm, my mother is a daughter of an ancient tribe, and even my three sisters all possess divine bodies, dazzling the world! This opening is simply invincible! However, Gu Xuan himself was set up to be the licking dog of Su Yunxi, the daughter of destiny. Not only did he break off the engagement for her and become the future empress, but he also provoked a powerful enemy because of her, which led to the destruction of the Great Yu Dynasty and the destruction of the Gu family! Even I will become the villain Demon Lord in the future, and will be despised and punished by everyone! Now that Gu Xuan had traveled through time and faced everything that had not happened yet, he just smiled! "Canceling the engagement?! Call it off!" "The Demon King, the villain of labor and management, is marrying the empress!" "As for the heroine? Kill her whole family!" On this day, Gu Xuan awakened his system and was born supreme. He rushed to the Su family and destroyed her entire family! "Daughter of Destiny, kill!" "Son of destiny, kill!" "Since I am the villain, the Demon Lord, then in these nine heavens and ten earths, I should be respected!"