Are you really surprised?
Lets be honest this game is primarily an NTR game, NTR is the core of it, just that dev adds a vanilla route the NTR builds off of to maximize audience and $$. But it constantly has the NTR feel even in that normal route (i.e. no loss) with the hard NTR disabled, but you still get the threat of NTR.
Credit where credit is due, from what I remember the dev does well to keep even soft NTR out of the normal route, although not in the case with the backstory... that be some unavoidable NTR (yes it is still ntr, the only difference is MC isn't the one getting cucked).
But yeah.... still very much an NTR focused game, is just that people who don't like ntr can play it. I wouldn't be surprised if there ends up being a proper full fledged ending where Hunter gets everyone, that isn't simple a loss ending to try again.
Of course you will also get the harem ending, but that is only cause the design is based around that as its base story to then build NTR off of.
None of that changes the fact, the core content and point since the start is NTR, just because it is to avoid it so you don't lose, doesn't change that it is the core focus.
I am sure NTR fans love this, because it is something new in the way of an NTR game, and they get to have a shit ton of different NTR situations because the dev can get creative with the different loss conditions.
And because of that, NTR fans will always have the most content, because NTR is a more primary focus than MC getting his dick wet. The true protagonist of the story is hunter, you just view it from MC.
If you don't want that... then may I suggest playing games where NTR isn't the core focus that the story builds off of?