The Demon Lord's Pet

This is going to be for a very niche sort of audience (I assume). That niche would be submissive girls who are into dark fantasy themes. This is for those naughty little minxes who enjoy being berated and belittled, so if it isn't your thing, I ask that you simply move on and leave it be.
I'm actually curious how many women read stuff like this.
This is an early attempt at writing a reader insert, so it'll be a bit rough around the edges.

Synopsis: You, the reader, are the favorite plaything of the Demon King, that would be I, as I narrate the story to you. As one would expect, in a setting with demons getting frisky, this will likely be a bit on the rougher/edgier side for some.

Petnames used include: Slut, whore, pet, a range of degrading terms. In addition, there are one or two mentions of "little girl" as well.