Japanese society is more conservative than American society
You couldn't live under this impression for ten days inside Japan without realising that it's a stereotype fabricated by a hostile foreign media that drives sales/clicks with attention-grabbing nonsense about how weird and controversial Japan is in ways that don't actually reflect reality. While Japan surely has its share of conservatism, the idea that it's more conservative than the U.S. is absurd.
Abe, while a conservative through and through, is surely to the left of Obama, for example, and Japan has never elected someone as openly far-right as Trump. The thing is that foreign media portrays Japan with an absolutely absurd Overton window. The JMSDF is maybe thinking about building an aircraft carrier? That must be far-right nationalism! Except, you know, pacifism as a national policy is extremely far left and shifting slightly to the right leaves you far, far left of Obama killing innocent civilians with missile strikes at countries the U.S. isn't even at war with (not to mention, you know, actually being in imperialist wars halfway across the world - also not a progressive thing!).
Prominent Japanese politician visits Yasukuni? More far-right nationalism! Except it's normal to honour your war dead - the U.S. does it too, and there are plenty of war criminals in U.S. graves. The only difference is that the U.S. won the war, and only the victor is able to persecute the loser for war crimes - nobody cares about their own war crimes. In fact, the U.S. is not even party to the International Criminal Court, and went so far as passing a bill authorising the invasion of the Netherlands if the Hague ever attempted to hold U.S. servicemen accountable for war crimes.
If you actually compare Japanese policies on anything to equivalent policies in the U.S., rather than holding them to some mythical standard that you don't meet yourself, there's no way you could come to such a conclusion as Japan being more conservative than the U.S.. Whether it's on healthcare, education, welfare, religion, the police, the military, gun ownership, international diplomacy, or minority rights, Japan has more progressive policies than the U.S. Virtually the only thing you could give the U.S. a point for is the legalisation of gay marriage, but in general Japanese society is much less openly hostile to gay people and was/is far ahead of the U.S. in other areas such as transgender rights.
Literally when did I say it was a uniquely Japanese thing?
"Japan is so weird!" - you're calling attention to Japan doing it, and by calling it weird implying it's not normal by definition, i.e., that it stands out from other countries uniquely. But to the contrary, it would be more weird / not-normal if Japanese media didn't feature problematic depictions of relationships, because problematic depictions of relationships in fiction are the norm around the world.
If you keep seeing weird rape stuff in manga, I think it's only natural to think "maybe Japanese culture has an issue with consent". Or maybe if you wanted to be more diplomatic you could say "maybe Japanese culture thinks about consent differently than America culture does"
Wonderful, you're really going for the Japan gawking bingo sheet blackout. Does Japanese culture have an issue with consent? The whole world does. Does Japanese culture have a uniquely bad issue with consent worthy of singling out? The US elected someone who brags about getting away with being a rapist president, appointed a rapist supreme court justice, and even the presidential candidate opposing the rapist president is probably a rapist too because the US's so-called left could never stomach a candidate that wasn't right-wing by international standards.
Meanwhile, a governmental body of the United Kingdom conducting a review of the police recently released a critical report stating that rape has been virtually decriminalized by virtue of the fact that the police no longer investigate rape, with less than 1.5% (and falling!) of reported cases being prosecuted. I'll take some shitty portrayals of consent (or lack thereof) in fiction over that any day.
But seriously, you realize "Not All Japanese" is implied when people make broad generalizations like that, right? Do you really want people to say "Not All Men" whenever they complain about hating men?
This analogy to 'Not All Men' doesn't make the slightest bit of sense. It's a complete non-sequiter. Nobody said anything about not all Japanese people being like that. My complaint is that you specifically singled out Japanese culture as being worse than your own country in regards to portrayals of abuse and consent, when it's really not. It's not that you made a generalisation that's the problem - it's that your generalisation is just wrong, not on an individual level but on a collective level.
It's frankly not worth my time to go tit for tat with you anymore.