I remember playing some older versions, if i am not mistaken you were renting a room at the house back then and not related. Though the incest sometimes remains a bit uncomfortable it's no problem imagining it being different circumstances and you are just a guy falling in love with alot of different woman :-)
That's a huge credit to how the story is build up and told imho. Also the graphics are very nice and i especially like how different the girls are and how natural they all look without any of the overly huge siliness you see in other VN's.
It's been a very enjoyable bugfree ride and i'm very much looking forward to more quality stories from Tales from the unending void :-)