Have anyone seen the new Gyo OVA? No? Then don't even think about it. It's bad. And that's coming from a Junji Ito fan. Before I go into more detail, I'll lay out my story first.
Back when I heard about this in February or something, I was quite elated. It's a freaking Junji Ito manga adaptation! What fan wouldn't be happy about it? I've always wondered how it would look like, from Uzumaki, to Hellstar Remina and some of his other shorter, one-shot work. It was Gyo, so "Okay," I said. Suffice it to say, I am disappointed.
I'm re-reading that particular manga again right now, but off the bat, the artwork of the OVA doesn't have that highly recognizable Junji Ito style. It's too ... clean. I don't know how to say it anymore. It just doesn't give that same feeling of reading an Ito manga. It doesn't have that ominous dread clinging onto the characters' faces. And the characters and story are changed by quite a lot. Even just compared to the first 6 or so chapters of the manga.
The pacing is rushed. 1 hour and 10 minutes is not a good time frame for a manga adaptation like this. Doesn't provide enough time to care about the characters' feelings. Explanations also feel weird and stilted I feel. And most of all, the charm of all of Ito's mangas that I have read so far, the mystery and supernatural, was shown only in a two-minute scene and a 10-minute scene, near the end. Oh and the ending is so lame and anti-climatic.
The one good thing I got from this is the soundtrack, like something Hans Zimmer would make. But then it doesn't fit the theme. So that's another one thing out.
Overall, it is a gory and disgusting manga adaptation, in more ways than one. If one is curious about any of Junji Ito's work, please mind that some of his work is the kind where it's quite detailed in a gory, macabre way, laced with mystery, intrigue, and most commonly horror. I'd like to recommend a manga to go start with, but it's been so long since I read one. Going by my dodgy memory, Uzumaki is the safest to start with, as the more squicky feel is near the end of the series. Maybe Hellstar Remina might be a good start too.
He does have a slice of life manga. His life. So take that as you will.