NO SPOILERS (Many people take this anime as a bad one because is an adaptation of the game, and they compare them, but for me, that I have not played the game, this anime was a great one. Story: 9/10 I think the story was very unique. At the beginning I was a little confused, but things got cleared in the end. Art: 10/10 I liked the art, a lot. Sound: 6/10 The sound lacked a little, it was different, but not very special.Character: 10/10
I liked all the characters, they were very different and had quite some good contribution on the story.

Enjoyment: 10/10
Yes, I enjoyed watching it. Very addicting.

Overall: 9/10

In short, watch it!