Ah, yes, I got invested in this game because of the *checks notes* submissive humiliaton fetish?
Looks like another dev forgot what premise they sold the game on in the first place.
I don't think there is such a premise. I'm quoting the overview: "An 18+ Visual Novel taking place in a kingdom where the pig girl Emelie is the princess!
You play as a human farmer in this lighthearted comedy adventure featuring plenty of adult content!". What we have now is quite fitting to this description.
Fact is, since all the updates are quite compact and they feature some sexual interaction, if they were all about MC and Emelie, the novelty and content would dry up quick. A modicum of variety is needed: hence, the world building and the other girls. To me, this pays off.
Moreover: since you're on this forum, very likely you are not paying for the game. So, there's an easy solution: skip this update and wait for the next, plain and simple.