I Was Reborn as the Demon King

Buried under endless years, no one knows the secrets of advanced civilization. When demons invade and the doomsday comes, a corner of the mystery of a new world is revealed... Ps (I am a freshman. I usually update once a day or every two days when I have time. In exceptional circumstances, I update every three or four days. I am deeply sorry o>_<o) Ps (The eras of the dynasties are fictional history, and the settings of the monarchs and many characters are based on historical figures. If you don't like it, please don't comment, thank you)