So... are Nip pervs all cucks or something?
I'd understand a fascination with Netori hentai... but why NTR? Are they that desperate to jerk off to women getting raped but they throw in a loophole that it's "the bad guys doing it" so they don't have to feel ashamed? Or is it a subconscious acknowledgement of America NTR'ing their empire during world war 2? And they've just come to terms with their hopes and dreams being taken away by someone stronger than them?
In any case... Nip hentai artists are just fucked in the head.