It does have a few scenes where you know you've impregnated the women. I don't think BoN is going to be completing this game anytime soon so the harem ending with all women being pregnant doesn't even seem foreseeable. Like we still have countless items that don't have any use or purpose, BoN is still working on the world, while chipping away at the family events. We are a long way off from the ending, this game will be updating for the next two years. If you hop on his discord I am sure you could ask him if that is what he is intending though, and I am sure he could be open to the possibility.