I think that Junji Ito is pretty well known here, but for the love of everything that's holy, avoid the adaptation of Gyo. I hadn't read the original and knew little to nothing about it (land sharks, gashunks, zombie fish and farts), so I waltzed in unprepared.
I still can't bleach it out from my brain, because hell, I'd be fine with regular gore and body horror, but they had to sexualize it, and add tons of fanservice. To a movie about farting via triple-penetration. There's a lot of gross and terrible scenes in it, and hell, I'm fine with any other zombie movie.
But this, and the added social commentary (in the 1st half on how Kaori treats her supposedly 'ugly' friend and later on where people of earth are reduced to farting giants) and Kaori, who's a personification of everything that I dislike in a person was enough to make me feel ill just from the imagery. And I assume that it's how Ito's mangas are supposed to work, and I still watched it because damn, the animation was pretty, but please, please avoid it if you don't want to get completely grossed out.
Just watch to the 24min mark. That's the nice part of the movie, a typical B class horror. Don't repeat my mistake.
Well, it was good to finally get this off my chest.