This anime has a good story which is little bit exciting because you will be wondering of how the characters will save the world but, there were lots of unexplained things i think because the number of episodes weren't enough, besides most of the episodes were talking about the characters' pasts and this was great for characters' development .
The art was marvelous including the characters and backgrounds but, there were little mistakes at drawing form far distances.
About the sounds, the OST was good and very suitable , the voices was amazing, voice actors did a great job.
This anime is good and if you have a spare time you can watch it, both of events and the characters are great but put in your mind that its only 12 episodes and this range isn't enough these kinds of stories .
