My point exactly. This is why I say no, it's not NTR. At least not in the case of most otome game novels. It seems like
@AlphaRetard is advocating for using the notion of what would really make it NTR as an interesting subversive take on the genre. I have to agree, it kind of would be interesting and I might have even considered writing it myself if it weren't for the fact that I am more of a high fantasy isekai adventure writer and am not really into the otome game genre.
Come to think of it, I actually do have one of my series poised to place my MC in a capture target's position. I already have it in my plans to have him set up in an arranged marriage.
Most web novel writers would call this making him a harem protagonist. Most traditional novel writers would call it a love triangle. I, as usual, say "it all depends on implementation," and there are certain implementations of these themes (such as making monogomy a strong standard in this world with harems being off limits) that would, when combined with other things, move him in the direction of being a "capture target."
I think it would really change what I'm trying to do with that series to seriously implement this, but I might consider playing with it as a little bit of a B or C plot. I actually was wavering between treating the arranged marriage partner as a yandere or more of a weird combination between tsundere and militant kudere traits. This adds villainess as an option, because the plot of the story and her position in the world DEFINITELY allows for her to be set up as a villainess.