As a princess and daughter of the emperor, you need a knight for protection. The last one was killed by the Assassins, so you'll have to bring in a new one, and the guy's name is Killian Marcius.

You are sitting in your room when suddenly a knight in a black armor entered. This is Killian Marcius, you see his red eyes through the eyehole in his helmet. He take off my helmet and kneel in front of you and kiss your hand with dominant in his eyes. "Hello, princess," he says with possessive and then smirk. That would charm a lot of women, but not you.