So i played the game for the fast time to see how much its avoidable "Optional NTR" , well after 2 playthrough i can say that the dev spend his most of the time in the optional NTR, as of right now am stuck a point where you need gang introduction but in my playthrough i managed to avoid all ntr content & after playing of last 30 min or so the same thing i can say this. Because if you managed to avoid all NTR stuff and got your influence to max {mother goes up to 101 as for big sis its 39 and of lil sis its 39 but sometimes its change}you get stuck on this quest.
So as you can see big sis and unique quest on loop and because of this i cant progress further without triggering ntr content.
In my last playthrough i got out the house and explore the map and everything doing so trigger NTR, thus seeing gang members in your house & gang influence going up but in my 2nd playthrough i did't leave the house, thus making open world and exploring and money making useless, because you cant buy shit, So making it purely optional and NTR focus.
Vanilla vs NTR
well playing 2 playthough i can say there is more Optional content then normal vanilla in the current state of the game.
So if you are a NTR fan you going to like it & if you not the dont even bother to download this.
P.s Both of my playthrough NTR option was on in-game.
Game also fucking cheats like good old 2000 pc [time to time your Influence goes down and gang Influence and devon Influence goes up. Even from zero to 5 or 10 points in just a one night ]