You know, for all the media where incest is portrayed positively from japan, is there another country that has a similar outright fetishisation of it?
Yeah, all countries have history with it (like any royal family's lineage), and yeah every country is going to have some people who fetishise the idea, but is there any other country (other than japan) that that flies their freak flag so proudly about this particular fetish?
... the same could be said for various other fetishes when it comes to Japan, mind you.