Best genre of NTR
Dudes who are beautiful, strong, smart, who have good social skills and a big dick are always expected to be the guy who will win the girl. Every NTR where there is a male gyaru or a tall black dude you can already expect that it will be him to do it, not really a surprise: "Look how beautiful i am", "look how big is my dick"( reason why i hate the BBC tag so much, there is no story or development, just "my dick is big" and then she is instantly corrupted).
But the Ugly ass nerd on the corner of the room? The retarded kid from the group? The skinny dude with no social skills? The introverted colleague of yours who is bullied by everyone? the lvl 3 adventurer on a party of lvl 90+ adventurers? Homeless dudes? Those people are realistically the LEAST that you would really feel insecure. Dudes like this needs extreme lucky or be very smart to gain something, so when you lost is crazy, because even with all the best qualitys you still lost to the worst, so it wasn't even the dick or some plot bullshit, it was YOU.
The degrading scenario of a hot woman having a relationship with suck a scum of a man adds an additional flavor too.
Blackmail/mind crontrol in my opinion are a bone killer, because it takes out the best part of NTR: the story; It feels rushed and lazy, the corruption usually its the same shit as the bbc: "i fucked you once and you can't take my dick out of your mind huhu" no real depth