Most of the frequent posters are probably playing with NTR off, but I want to talk about the optional NTR here for a bit.
I was curious about the NTR and went back on a save to fiddle around with Kate NTR which seems to be the biggest route for NTR related stuff. The "issue" I see with most of the NTR in this game is the insistence on the MC POV. We can't see the scenes unless MC spies on them. If MC spies on them, that means he has to know. If he has to know, that means he has to be OK with it. If he is OK with it, it's just sharing/netorase/big pimpin' rather than NTR.
I know this game was never targeted towards true NTR lovers, but this is the fundamental issue in many games that adds optional NTR in a Hero's Journey type of story. If they insist on keeping the MC POV at all times, it's rather hard to fit actual NTR into a story designed to show the MC's growth. Either the narrative suffers because there is a conflict between a knowingly unwilling cuck and the plot, or it turns into sharing/pimping which removes the blow of NTR.
I just find it much easier to fit optional NTR into plots like this if the game is ok showing scenes from the female POV without the male MC's knowledge. That said, the Kate and some others are probably intentionally designed as netorase/pimping arc. I know there was the Emily bandit thing that happens without the MC being there. And Tia got raped by some bandits when MC got knocked out.
I love the attention to detail in this game though. There seems to be a huge amount of variations in the text based on a myriad of conditions. For example, I let Rick date Kate first before swooping in and doing the netori. I was wondering if netori talks would actually happen, and it certainly did. Super hot dialogues about it too. When you bring passed out Rick back home and go to Arianna, there are a lot of talks about banging Rick's GF and sister and getting them pregnant.