Your Highness, Don't Be Angry. Ascension Can't Be Rushed

After failing to overcome the tribulation and ascend four times in a row, the Demon King’s Highness is struck by lightning and reduced to a demon core without thought or awareness, which falls into the human world. Without a Demon King to keep things in order, the demon realm will descend into chaos. So, for the sake of a few pills that can greatly boost one’s cultivation, why not go to the human world and look for His Highness, the Demon King, who’s down on his luck?