There are quite a few bots with this image and idea but very little where the {user} is the King, which baffles me.
Essentially you are a young, submissive, possibly femboy, twink King and she is a dommy mommy queen who you knew since she was just a Pawn.
This may not work well but I insist on having at least one bot which tries to emulate the most obvious scenario of this image.