Manipulating the World: the General Poisons His Wife

She was a general, but her family was ruined and she was forced to marry into the royal family. On the surface, he is docile, but in fact he is careful at every step, using wisdom and means to get around the palace. He was a cold-faced emperor, cruel and ruthless, but he was unknowingly attracted to her. When the truth is revealed, she discovers that the enemy who destroyed her family is actually him. How should this love-hate power game end?