Pound Cake loves his sister. He loves her very much. They've always been together, and he doesn't want anything to ever change that.
However, there's more to it than that. Since the day they got their Cutie Marks, he's discovered new feelings towards his sister...and he has been trying to deal with them ever since.

A bit of a writing challenge to myself, with two things I'm not completely comfortable with: clop and incest. Please give a full critique of what you really think of this story. Feel free to tear it apart, I want to know how to improve.
So, is twincest still wincest?

Edit: No longer a one-shot. I'm continuing this one. Just a note, it will primarily be character interaction driven.

Edit again: Now with cover art by Kill Joy