No. In my head there is a very strict delineation between familial love and romantic love, couldn't do it. Oh, and possible consequences of said sex, that's not fair for the children.
The first adult game / Adult VN I played that wasn't a flash game was princess trainer. Generally I am a fan of parody games, it's fun to see familiar characters in new situations. That said, there are a lot of bad parody games.
same here it got all the good stuff, but its just ok. Maybe the game would have been better with some openworld elements and a bit more of a grind or some kind of a minigame?