The Mysterious Empress

The Mysterious Empress summary:

The first time he saw her was during his mission to survey the kingdom of Aur. The fateful encounter actually make a deep impression in his heart and he long to see her again. They apparently meet again, and he give the hint of wanting to pursue her. However they have to separate again. 5 years later, he meet her again, but why was she sitting on the throne beside the new ruler of Aur? But...