Story: 10
I mostly admire that the characters are easy to relate to. And I know it's basically just a romance in the middle of a large battle. But the story does have a lot of potential, so I hope that they make a second season to tie everything together. It's also interesting that the beginning was sort of like Twitches. Yuki is finding out about his powers while secretly being watched, not knowing that someone else (Kanata, my spelling could be wrong) is doing the same thing.
Art: 10
The art is the best that I've ever seen done, besides Rokka no Yuusha. The graphics are realistic, except for the wind blowing their hair around. I've never seen hair in the wind swaying in a perfect line.
The sound is good too, I can't really go into detail about it though.
Character: 10
All of the characters have believable pasts and are relatable. I noticed that a lot of people get mad at Yuki because he mainly stands there during battles but technically, his powers weren't fully released or easy for him to control.
Overall, I think this is a great anime so I'll probably watch it again and possibly the second season, but I'll probably just end up reading the manga.