I still don't get the idea of NTR in a game being so upsetting to anyone.
When you play Monopoly in actuality you aren't the shoe or the race car, they're just the game pieces you use and are ultimately inconsequential. All pieces serve the same function, to hold your place and advance 'round the board. If you switch the hat with the dog do your pieces move the same? Do you earn or lose the same monies reliant upon the piece you utilize?
No, no you don't.
So why would it matter who was doing the fucking as long as there is fucking? I have a decent imagination but have never so closely aligned myself with the MC of any game that I am not able to differentiate myself from the characters under my control.
This is not a shot at anyone in particular but if you can't stand to watch characters in a game having sex because it isn't YOUR character turn off your PC and go "touch grass". That's a glaring red flag indicating insecurity issues and lack of self confidence.
Remember that a video game is like a book. You don't get to tell the author how to tell their story, you can climb aboard and see where it takes you because your preferences and predilections are of no consequence to anyone but yourself.
In closing I will assert that if NTR in a video game/virtual novel upsets your emotional state of being so greatly you are going to have a tough road ahead when you leave your home and have to face the uncontrolled reality that comes along during the course of a lifetime.
I am not a politician and I approve this message.