Yeah i can see points in favour of incest being intended and also points not, i mean, is the sister only a half-sister cause she has nothing to say about her dad dying if they have the same father... but then other parts, like talking to the skateboarder girl wouldn't make much sense if they weren't related cause what special bond could you have that makes it weird to be sexual with each other if they're unrelated? It's all just inconsistent, i don't need the game to have incest to enjoy it, nor would i prefer it didn't, i just want it to be consistent and to stick to the authors original intent, be that incest or not.