I'm just ended playing the intro and I can say that I'm not surprised that someone already did a review complaining about NTR and I understand why. You said that NTR can be turned off, so your girlfriend can't fuck others but girls with boyfriends still will have sex with them, ot at least thats it what I understanded. But here the NTR happens no matters if you turn it On or Off. You are presented with a girlfriend that fucks with everyone, even with the teacher and your bestfriend, so the switch is not working or is just like a paint in the wall? used like decoration.
Don't get me wrong, I love NTR, but I'm making this observation just you know that people will complain about you saying that NTR is avoidable and still you get NTR in the Intro.
Like I said, I just ended the Intro, I'll play it until the end and see what sugestion I can make. Like you would think one will be about faces and maybe about bodies.
I just hope you don't take it bad because there is always a room for improvement and you can take those advices or not.