I didn't read on past the point that disgusted me, but sadly this isn't even a rape fic. It's worse-- it's a rape fic where Aang-in-Zuko's-unaware-body rapes and impregnates Katara with the next Avatar, but written in such a way that the author doesn't even realize that what she/he's describing is rape.

The only reason I don't link to it in my post is that I have this hope that, even though 50 people besides myself have reviewed the fic and not said a word about the fact that the scene was a double-rape of Zuko and Katara by Aang, that maybe even one person in the next fifty reviews WILL notice and comment on it, of their own will. ::sigh:: I'm an idealist that way.