Havent looked at this game for a long time now, does it still contain the "avoidable NTR that is actually NTR but you just hear sexsounds and dont go check it out" content as the only "non-NTR" option?
In the Main Game, Hunter has been described by the developer as a Wile E. Coyote type character, always chasing the girls and instead ending up failing (and increasingly getting injured in comedic ways). The NTR is restricted to the Bad Ends which are by nature designed to be pretty easily avoidable but can also be fully deactivated never to be seen again. There is NO on-going story route that allows for NTR, only Bad Ends.
The What Ifs are voted on, and the NTR fans keep winning the votes. There is, I believe, ONE What If to date that is not NTR, where Sterling embraces his role as harem master and goes hog wild with all the women in sight.
The idea that development time is being taken away from the main game to produce the What If episodes has been repeatedly refuted by the dev along with an explanation of why that's not true, but some people (mostly people who really REALLY hate NTR) refuse to believe him. This has been made worse by the fact the the last few updates to the main game have gradually taken longer to complete. However, that fact was predicted and we were warned about it. The official stance of the dev is that the updates are taking longer because they are bigger, include more girls each time, and have more animations. The official explanation from the dev on why the What If episodes do not cause a delay is that he always had a set work schedule for development of the main game, which he has stuck to, and the work he is putting into the What Ifs he is doing during what had previously been his days off.
EDIT: To be clear, there is metric ton of non-NTR content in this game, most of it beautifully animated. It's one of the hottest games I've ever played. It is also written to be comedic a lot of the time. I personally do NOT like feeling helpless to avoid rivals and NTR, but I never feel that way while playing this. Hunter never feels like a real threat to me in the same way as the NTR threat characters in a lot of other games. He is essentially a parody of NTR characters. He is a hideous buffoon that the women have no interest in romantically and are not attracted to at all. He is a creep that is always lurking, but as long as you follow the story and don't watch the optional and easily avoided NTR Bad Ends, he consistently comes off as comedic foil with ridiculous schemes that constantly backfire in humorous ways.