Story: It might just not be my cup of tea, but literally nothing happened. The story could have filled two episodes, not twelve... And it wasn't even original, except for the powers, of course. The powers were cool, but we never learn anything about them except for the fact that the main character is strong, yaaaay...
Art: This is absolutely personal preference, but it was driving me crazy that they don't have noses most of the time.
Sound: loved the opening, even if it had nothing at all to do with the story. Generally the soundtrack was nice.
Characters: ...why did they put in the siblings who do nothing wrong but look the part of the villains?
Enjoyment: I suffered from the fourth episode. Didn't get better.
Overall: This anime didn't make any sense at all... 11,5 episodes are plain boredom, continued by half an episode of action with no explanation at all, and that's it.