Maybe is not strictly "NTR", as mildly "romantic" interactions are only possible with a couple girls or possibly just Max, but from players perspective that 0.18 choice it's at very least an intrussive and inconsistent sharing kink, for fist time in the game development. My MC is definitively interested in all girls, mostly not "romantically" but have been working in having as many girls as possible for himself, stopped other girls to be abused by others, etc, I even avoided giving the most hardcore pics to the psycho teacher (waiting to a future version in which could be mandatory or something bad would happen, I'm afraid), there are zero interactions or dialogue choices in my playthrough suggesting my MC would accept sharing any of his girls, until 0.18...
That's the thing, this is the first time that seems that "sharing"/publicly degrading the girls is mandatory in a hard or a soft way, that's the only choice. In my playthrough MC corrupted all the girls for himself, the only "degradation" was an intimate one with the girls and MC alone and my MC didn't allow any cuckoldry with the director, the psycho professor, the drug dealer, the stalker boy, the art critics, etc. Since 0.18 however for first time in Lust is Stranger development we lack an option for the exclusive "harem" (or just "MC-centric") route or a clear indication by the developer that would exist in the future. We must let Victoria to be fucked by the ultra-cringe boy (cut one of Victoria legs, would be less sadistic) or betray the girls, force them fuck each other and share the video with all other students...
That mandatory sharing-kink choice completely broke the route that many players chose months, years ago. It's inconsistent and even "anti-erotic" for many players, as some other users comments suggest.