Hey WarmBeer, if you see this...Right?
A big part of what I liked about this one was that the NTR (normally not a fan, at least highly picky) was mostly "avoidable" precisely because the MC is not a sexual-inadequacy-meme, albeit as much of a pushover as such a plot demands by definition, which is enabled by/dependent on FMC's (devotion)x(craziness).
Overall the NTR hinges on FMC being willing to sleep around for their shared benefit, sometimes enjoying the sex itself but not actually outright cheating on MC to seek basic satisfaction.
TL;DR the writing justified the non-MC sex scenes instead of time-gating all the sex-scenes lol
I recently came across another game on here called "Life After Victory" with a somewhat-similar premise but in a fantasy setting. It has a lot of potential that I think it's going to ruin with a done-to-death "MMC cock so small it moves the plot but not FMC."
In light of that, just please keep in mind what I said in the post I'm self-quoting here.