I have been trying to find a story about Princess Luna and... A guard, I think. No, not Idol Hooves. Here he is an actual pony, in past he was a businesspony, due to some trouble with his father he left, and went into guard. Reason I want to re-read it is becuase of their exchange after an opera, with it being Luna pointing at him, saying servant, pointing at herself, saying queen. Name and author is good enough, but link would be better. Thanks.