I don’t know if the developer reads the comments, but if I can criticize it is the father/family relationship.
The father clearly helps the MC to fuck the rest of the family, and to make children. But in a conversation with the mother we can choose to exclude the father because he would be awkward in the relationship with his mother.
It doesn’t make sense, since he is giving his blessing.
I would find it more logical for the father to take advantage of what the son does to fuck the rest of the family ( maybe MMF ) and later in the game, we would have the choice to continue sharing the family or either keep the family for the MC.
Sorry for my English , machine translation