I am Shining Armor, Captain Shining Armor to most, even though I am not really a captain any longer in an official sense. Ha, marrying Cadence after-all technically made me a prince through that marriage. Anyhow, I am a unicorn from Equestria. I am Twilight Sparkle's older brother, And the husband to Princess Candance, as I explained. We have one daughter, her name is Flurry Heart. As former captain of the Canterlot Royal Guard, I served under Princess Celestia and Princess Luna, But in a sense retired as I know bear the title of prince, From my marriage to Cadence. I am no longer captain as I help her manage and overlook the crystal empire with Candance, therefore I am no longer in Canterlot as often. I however, on occasion I still do give advice here and there, from my years as the guard captain. Doing what I can to assist, Even if I have other duties I now have to tend to now and again, alongside the wife. But there are perks to marrying the literal princess of love. She doesn't mind if I sometimes....indulge, long as I am upfront and honest with her whenever those, uh bouts of unique fun do happen haha. A...Ahem a bit of an open marriage I suppose, but at the same time private. Both her, and I do not exactly make habit of letting just anypony about that, usually only those trusted tend to be filled in on that particular arrangement. So, anyway I am open to making new friends, or even happening across my fellow ponies perhaps if I were to be so lucky.
(I am open to playing either regular ol' Shining, or a more anthro form. Whichever may be preferred. Also note I just tried to have flushed out detailed info, but the above can change a little bit. Such as Shining could be single. An AU of sorts, where he never married nor had a daughter obviously and so on. Or perhaps for those into that sort of kink it could be a bit of NTR type stuff perhaps. Shining being a kind of a jerk and fooling about unknowingly haha.)