After Making a Lifelong Private Decision with the Devil

He is a useless god who was expelled from the divine world. Although he retains his memory and cultivation, he will never live past the age of twenty-four; She was a princess from the divine realm who was favored by the divine king. She accidentally wandered into the mortal world, lost all her cultivation, and became a concubine in the general's mansion. Because of the chance encounter in the Heavenly Prison of the God Realm two thousand years ago, he has never forgotten her. In this life, he must protect her well no matter what, "Girl, even if my life span is only twenty-four years in this life, even if I have disappeared from this world, I will still love you..."