Asphodel wrote...
Otakus go to Japan, see what they got goin' on there, see it's awesomeness, then bring it home. It spreads from there.
True, people can learn things by going to other countries but what made them decide to go to Japan and find out about hentai and get all creative to make the different categories of hentai today?
Something else that interested me is that the companies that bought the rights to hentai outside Japan, like United States, also got the rights to uncensored it, while hentai/pornography in Japan can take months/years before they, if at all, uncensored it.
So to be blunt and answer my own question; One of the main reason that hentai is in other countries is because companies wanted money and that's how other people found out about it, which got the drawers to get more creative with different ideas, thus having all the different categories that made hentai as popular as it is today.