Does the mc get ntr or mc commit ntr ?
Both. I read it too, if you mean the OG which is deleted on his pixiv now, which make sense he dont want to spoil the readers.
The reason why I say its both is because MC falls in love with her, but didnt know it back then but she was already fucking 100 different dudes + She loves her BF. So yeah, MC got typical cucked. However, you could also say that MC does the NTR as he fucks her while her BF dosent know. The problem is it didnt feelt good since she "just" enjoyed the sex, not him. She only started to "love" him much much later. The reason was probably because the author is a cuck himself so creating random art with her and bunch of old ugly man was normal for him. The ending in the OG was kinda dumb. MC gets beaten up by sluts BF but still says he will simp/chaise for her. And thats it. At that point I think he didnt post on pixiv anymore and removed it since then, like I said as not to spoiler the readers.
As to say if it will follow up the same ? I dunno. Right now its 100% the same of story, tho some elements like blown full NTR scene with slut FMC + 100 other dudes got reduced dramaticly (But its still here as you saw in this chapter), while the "romance" and slut/FMC starting to "like" MC much earlier.
From my experience its all about if the manga falls or rises how it will end. Right now its not that popular, for obvious reasons. So I guess hence the toned down version we get as not to anger the potential readers. But some time passed and he probably tries to approach a different way and focus on the other part of the community who enjoys NTR.
In the end only the future will tell how it will end, but no mater what will happend its not a RomCom in the slightest. Just another approach of a cuck hiding its true fetish behind some "plot".