Incest & Erotic Fairytales

I have in-mind an interesting bro x sis incest threat that takes place in the story of Little Red Ridding Hood. In this story it turns out that the black wolf is actually Ridding Hood’s long lost older brother. So they set out to help brake the cure so anything can happen along the lines, that way the story is open to anything. Ridding Hood doesn't have to be human. PM me if you have any suggestion.