The Strongest Son-in-law in the Other World

It's said that all things in the universe originated from Hong Yuan... A generation of genius, the uncrowned Evil Emperor, possessed the most precious treasure of Hong Yuan and traveled to another world. Humble in origin, he faced indifference, yet he cherished none of it. Possessing a peerless tome and cultivating unparalleled magical skills, he cloaks himself in the city, yet controls the world at his fingertips. As the saying goes: Let the world of mortals wander, let the laws of heaven remain uncertain. From the vast sky, I pierce the waves, sword in hand, and sing. Those who obey me live, those who disobey me perish. This is my principle. Traveling the world with my beloved is my dream. I am the Evil Emperor, the uncrowned one of heaven and earth!