I loved the manga so I was really looking forward to the anime. But after it was delayed 4 months it's released as 12 5 minute long episodes. They took the most basic scenes from the manga and tried to make it more into a horror anime instead of the psychological anime it should've been. While the art is good they censor most of the episodes anyway so you barely know what's going on. The only saving grace is that they stuck mostly to the manga storyline though they removed a lot of important scenes in order to keep it so short.
Even though I recommend the manga I would never recommend this anime.