People who complain about NTR crack me up. Sure seeing some dude cucked is sad and all, but in this game these girls aren't even "yours" to begin with. They don't even love the MC of the first game, they're just horny.
They literally equate sex = love and that's not even the case, that's fucking childish logic right there. Even IF the girls in the "NTR" (not even NTR) say something along the lines of 'I don't even love him./You're better than [MC].', that's not even NTR still. It's not explicitly said to YOU THE PLAYER that you and the girls are dating, married, or have plans to do either. Sure it's them being a bitch but YOU CAN LITTERALLY FUCK THEM ON A MISSON WHENEVER YOU WANT. Get over it, Jesus Christ.
I usually hate NTR because it's just dogshit writing. If it's done well I don't mind it as much. People always want to talk about realism to back up their views, where's the realism in every girl in a game cheating on you out of fucking nowhere? Games will have characters that are like the completely innocent/loyal type of girl and she'll just cheat on the MC or whatever just because it's an NTR game. It's usually just mindless kink/shock value over realism. I'm talking about general NTR at this point, not specifically this game because I haven't seen the NTR content here.
NTR is the type of thing that I feel needs a good set up and some realism. EG: Not all girls cheat and there's usually warning signs like they're clearly narcissistic and such. The only girl I feel fits into that category slightly is probably
I'm not fond of H games where any of the girls fall for anybody (including the MC) the moment they're fucked by them anyways, that's just some more dogshit writing usually. Don't get me started on the shitty dialogue most NTR games have...
The fucking during missions isn't canon btw, you can clearly tell they don't consider that during any of the scenes by mentioning it's their first time having sex with the MC and such. You saying "They're not married or dating or in love" when most the girls say they love you or at least act like it and shit is just stupid btw. Like things need to be explicitly stated anyways. "It's not NTR" when the fucking devs call it NTR themselves, lol. Feel free to look at the DLsite tags.
TLDR: I don't mind NTR in games (If it's set up well/realistic) , but I usually hate "NTR games". Like Mahou Shoujo AI and many similar types of hentai could be considered NTR, but they're not fucking obnoxious about it and you wouldn't consider them typical NTR right? There are some VNs and stuff that have NTR elements without being "NTR games" too that are great because they actually set shit up in a way where NTR is reasonable.