Okay clearly you're taking issue with the harem portion of my argument, so let me clarify that I'm only using 'Harem route' because that's what the game calls it. What I'm referring to is non-NTR content, my bad for not specifying
There are still more scenes of other people fooling around with each other, than those that involve the MC. The devs just don't consider them NTR, because girl on girl "doesn't count"...
Ok, forget about this. Let's take a step back and see what this game is about...
Before the sex scene with the doc, we read something about five women
being impregnated by the MC.
I guess those five are the main "harem" love interests. Let's take a look at them!
1) The mother. Already has an established affair and is fooling around with pretty much everyone we've seen so far, besides the doc (but I'm sure that will change soon enough).
2) The sister. Already fucking the father, fooling around with the mother and using the MC strictly as a dildo.
3) The doc. She is married with no indication there's something wrong with her marriage. They didn't even use the common "neglected wife" trope, they just made her a slut, who's banging a guy her son's age, just because he has a big dick.
4) The pornstar next door... Well, even if she wasn't banging the mother on the side, she's a pornstar. Her job involves banging multiple people.
5) We don't know yet. The pornstar's cousin perhaps? The MC has her poster on his wall too and she was mentioned in a conversation between his mother and her lesbian lover, so she's a good candidate. Well we don't know her, but she's also a pornstar, so she's obviously banging multiple people too.
So... This is the cast of women for a game that supposedly has a "harem" path and funnily enough has a romance tag too. Everyone is actively banging someone else (in some cases a lot of other people) with no indication that they'll stop anytime soon and the only reason anyone has shown any kind of interest to the MC is his now enlarged dick. Unless of course, the "romance" applies to the mother's relationship with the pornstar or the daughter's with the father.
The could have called it "polyamorous with no other dicks included" path or like I said before "12 year old's wet dream" path (I mean, come on! Every woman is bi and we have a couple of pornstars hanging around...) and that would fit better.
What I want to say with all of the above? You can't make a game where every woman acts like a slut and then just put a "harem" switch, and add a couple of "ifs" that will skip the content with other dicks and get it over with. Either keep just the "everyone fucks everyone" path as the only path or at least add a couple of images and change the dialogue a bit here and there.