A pair of manga, one of which claims that "there is nothing at all in Korean culture to be proud of" while the other calls China a "world prostitution superpower" obsessed with cannibalism (?!), have become runaway bestsellers. The publisher is surprised with how popular they have become, but nobody seems particularly concerned.
The Hating the Korean Wave series began as a webcomic on the artist's site.
More fun from the nation that brought you Nida. I guess since their constitution forbids them from declaring war, they have to goad their neighbors into attacking first.