The Power of the Emperor and Empress Dominates the World

I am willing to overthrow the whole world for you, I just ask you to allow me to live a glorious life. He was originally just a cold and idle prince, but because of her appearance, he killed his brother and mother to seize the throne, just to protect her safety throughout her life. Once in time, a detective became a royal lady. She only wanted to get rich and live a good life, but why did she accidentally become a queen?