It's not the same day over and over again.
It's dependant on what you've done.
There is progression. It's based on what's available, depending on love/corruption/relationship stats and what content is in the game, and what you've already done in the game.
So far you can have sex (corruption path) with all three of the women in the family, and similar on their respective "ntr" paths.
If you haven't guessed that it's based on in-game stats, I'm here telling you it is. So will most everyone else who's posted in this thread. Skim through the thread and you'll see for yourself.
This game's like a sandbox-lite open world game, similar to Red Dead Redemption or the Grand Theft Auto games from GTA3 onward.
There's three paths for each of the women in the family, love/corruption/"ntr". There's some content for each, but far from completion.