The Servant Is the Demon King?!

Because he had the heritage of the ancient Demonic Emperor, Demonic Emperor Zhuo Yifan met the misfortune of being betrayed and killed by his trusted disciple. After being reborn, his cultivation went back to zero and he was trapped by a heart demon, given no choice but to become the housekeeper of the Luo Family's lone eldest miss. From being a Magic Emperor to being an insignificant housekeeper, how would he get along with his "heart demon eldest miss" and what power would he gain in order to lead himself and the declining family to rise back to the peak of the continent!