The other 2 girls will move on, get fucked by some dude so you will not replay the game for the other 2 girls paths cause you will already got the ntr with them in your first game run.
In all Honesty, this still bothers me to no end, that i feel like i want to slap everyone of you, because you still "misuse" the Definition and Meaning of NTR. If you decide for one "partner" and the other keeps moving on, it's simply for an Fact NOT NTR, because these Woman never "belonged" to you to begin with. It's like you had a choice and you work towards it, and other Characters keeps moving on by that. That doesn't mean that the other Girls get stolen from you.
It really is a problematic Mindset, because only because of your own butthurtness that you can't get a Harem or the fact that a Dev have the guts to have a more realistic Approach, to have actual Character-Progression and not that the other Girls are mere static assets. I mean what do you think happens IRL when you shut down a Woman? Do you think she will stay single and bitter for the rest of her life? Oh and when she moves on do you cry at your current Girlfriend/Wife (or Friends) that you got NTR'd?
If i would badmouth at you and say if you have a similiar Mindset irl than i'd say you won't be in this Situation anyway or for the girls you shot down it's not a real loss anyway for them.
For tagging like NTR it becomes a problem because it lose all it's meaning and what people are looking for. If now Girls which you didn't choose anyway but get a boyfriend is considered as "NTR" than oh f**** boy. Wenting from a Genre / Szenario which is based around two people love each other, but one gets pulles away stolen, to a Story where one Protagonist have potentially 3 candiates which doesn't love the Protagonist at that point yet, but two moving on to another relationship is now considered NTR than holy f***. Whats coming next, isn't it allowed for Games that side-male-characters have a girlfriend too, because it shut down a potential love-interest for you or your "Harem" so it's NTR as well or what?
And another "thing", for all this Anti-NTR People, which also start to cry a river once NTR-Fans defend themself and their genre, with arguments like "each have their own taste and kinks so deal with it". First of all, than be a good role model and stop Kink-Shame by stopping to start a debate every NTR Game which pops up. Imagine your Favorite Kink, like let's argument would i and others would move into and start a debate: "That's sick because you basically cheat on your Girlfriend"-nonsense and stuff. Kinda shows the double-standarts you folks have... Secondly: Stop making up your own Fake NTR-Definition that's kinkshaming and insulting as well. A story becomes not automatically "Incest" only because you move into a Friends-House of your Parents(as an example). So a Story doesn't become NTR only because you choose a girl / route and miss out the others. Get a freaking Grip.
/Edit:
As a side-note i find it also a weird flex, to call it NTR when you replay the game, so basically starting for fresh and consider that you go a different route that you already got NTR'd... what the actual...
/Edit2:
Another sidenote i'm not saying there doesn't exist NTR in this Game... we've confirmed that atleast the Spoiler-Girl will basically become Netori. And we'll have to see how it work out if you f*** up your walkthrough with the choosen one. My hangup here is simply to call it NTR, only because the other Characters move on (like i explained in my WoT above).