Yossa? Is that you?
I could not possibly disagree more with your view on this. You say there is more to the story than...lets use the words "family relationships" instead of "incest" here. There isn't. Not yet at least. All we have right now is a premise. And that premise is the MC returning to a place he didn't want to go back to, to see people he didn't want to see again because his not-mother got into an accident and refuses to speak now.
No she wasn't hurt. She isn't dying. She doesn't need blood or a vital organ. She just "lost her voice". How does it make any fucking sense whatsoever for William to put himself through something he REALLY doesn't want to just to see an unrelated lady that isn't speaking anymore!?!?!?
So I ask what else is there besides "family relationship drama"? Leia's pimping and drug dealing? We have no proof it's connected to the planet sized woman's accident. No connection whatsoever to the Krayt as of this moment. So no. I have to pushback on that. There is nothing more to this game at this moment than literal family drama. And THAT gets destroyed the moment they are not family anymore.
So no, fuck your fetish kink reasoning. I would never touch Leia, Dylan or Gigantor. As for Katie i'd bang her no matter what. Related, unrelated who gives a fuck. She's hot. As long as she is a biological woman, I'm in!
EDIT: Thank God for Krytax123 for the much needed injection of common sense in this thread.