incest tag is a lie, its a bait and switch, the "half-sister" turns out to not be related at all in the end.
that and the ending sucks. its just depressing bad end for everyone. with only 1 other slightly less bad ending that you can only get if you dont bang anyone. was an easy 9/10 game until the final update. but the game on final release is like 4/10. just average vanilla, with nothing that makes in particularly special with an ending that drags the whole experience down.