The storyline of this anime is pretty ok, it has a nice premise. It is very good at building tension throughout. At the end it changes at takes a long time to not go very far.
The animation is very good. It is crisp and is consistently, at least, very well done. My problem with it is that it doesn't really match the tone of the rest of the production. A slightly more grimey approach, to the colouring especially, I feel would have greatly benefited the show.
The music used throughout is excellent, to the point of wanting to own it. The voices were a little forced, but overall they were good
A little annoying, by that I mean that none of the characters are anything really new or special. Their predicatablility is whats annoying and you end up hoping to be proved wrong about hunches you have. Sadly that doesn't happen.
Good. For the most part it is a good thriller. You should watch it. I will warn you know that the ending is not great, but I don't know if that will help.