I had no preconceived notions about this anime when I bought it, but it had me rooted to the spot in the first episode. Not so much for the action sequences, but for the dynamics of the relationship between the 2 girls that become the main characters and watching their friendship develop and Tsubasa slowly finding herself with the prompting of Hikaru. I enjoyed seeing their interaction with their friends and dailly lives, and how they dealt with the ever sinister threat presented by the Magyars, and how each time Tsubasa finds the courage to stand up and fight when called upon by her "sister".Sadly, the last few episodes were weepies, but in my case it was tears of joy at seeing our heroine blossom, with cherished memories and the hope of a new life back home in Tokyo.
The background artwork is beautifu, the production is slick, and I was not left with the sense of "to be continued." The only gripe I had was the episode length, at times I felt like I was watching a movie!
It's highly recommended, but only if you are more interested in human relationships than alien invasions.