Soul Penetration Demon Ancestor at the Beginning

The male protagonist Li Jian's soul transformed into Rahu, the strongest demon ancestor in the ancient world. From then on, his own demon king's life began. He killed people and set fires, robbed women of the people, and snatched candy from little girls. He was kind-hearted and saved others, but he was evil-hearted and killed everything [Shuangwen + Villain + Not the Virgin + Darkness + Flirting with Girls]. If you are interested, you can read it. The writing is average, and it's fun to watch.