This review is from a person who hasn't read the manga before. I feel like a lot of the reviews focus on the comparison between the two which is fair but this review is going to focus specifically on the anime. To overall sum my opinions on this anime, it was a fantastic anime that had me on the edge of my seat the whole time. This psychological thriller and horror anime had me in shock every episode with surprises and suspense. I basically felt I knew nothing about anything in a good way throughout the anime. Of course, there are always bad aspects as well. I felt like Sister Krone was there for no reason if they're going to just kill her off like that. There were also some questionable things like certain escapes from certain children (Don and Gilda)(Norman and Emma ep1). I really did enjoy the animation of their faces and soundtrack. The story kept becoming thicker and the characters kept becoming better. Now let's get into certain aspects:
Story:
I am not surprised by anime studios that they make something so different to typical stories of other anime. I really enjoyed the complexity of the story and how events all led up to the final episode. I did see that tragedy coming. Things were becoming too perfect. I loved every twist that was thrown into the anime especially at the ending. I don't watch typical dark type anime but this one was really good. The story always gave me shocks and surprises every episode I had no idea what to expect and that is what I really liked most.
Characters:
The characters were kind of basic to me when first introduced. There was Emma the "hero" that can still achieve everything in her way without her will breaking. I really wanted to see her be pushed to the edge of insanity whenever that tragedy occurred. I was very pleased with Ray's character. He was always a wild card and the final episodes really gave me chills to what he was thinking. Norman is the mastermind which I don't know if he was "too smart" for the anime or he was supposed to be that smart since he gets perfect scores on his tests. Ray is my favorite and I feel like after every episode we find a new secret about him. Don's character kind of ticked me off with him acting so irrationally. He always frustrated me and felt like he was doing unnecessary things in the beginning.
In conclusion, this anime is an amazing psychological thriller that had me questioning everything in the anime and surprised the whole time. If you are looking for a mind-bending anime, then this is your pick.
DISCLAIMER:
I am in no way a professional critic, this is only my opinion as a beginner anime lover.I know the manga was probably better than the anime in every way but I haven't read the manga before so this is my opinion with no prior knowledge of thes story or characters.