Honestly a muscular handsome guy with a huge dick is a very corny kind of ntr hero. Some people probably like to associate themselves with him. But the NTR with this kind of NTR bull is usually very boring and fast paced. It's very easy for the protagonist to swap her boyfriend for such a handsome guy with a huge cock and good looks.
But when the protagonist is taken away by some fat and/or smelly and/or old and/or disgusting man, it gives a certain spice to the story, because the protagonist has to be even more morally degraded and corrupted to leave her favourite more or less handsome guy for some disgusting freak who fucks well. As far as I'm concerned, this will be more interesting than a banal NTR-bull, who surpasses the male protagonist in almost everything.
I understand. Okay, that's your opinion, but my opinion is that I don't like fat, ugly male characters over handsome, strong ones. Of course, Kirito is handsome, a genius, kind, friendly, and doesn't look down on anyone; he's helpful. That's why girls like Kirito, and Asuna loves Kirito. That's why I like Kirito's character and am a fan of his. Generally, I prefer it when the other man in NTR hentai is lean/muscular; the male character's better personality is better than the other. How many bull characters are there from NTR in the movie? I'm not talking about NTR hentai games, but movies. I haven't watched many hentai movies where the bull from NTR steals a guy's girlfriend. Because when I watched three NTR hentai movies, I saw how the fat, ugly one broke a girl's mind, and he also has a big dick and great stamina. So I still wonder how on earth he can do so well during sex with a girl? I know you will write that there is no logic of reason and plot logic in NTR hentai.