People compare it to K-On!, but I feel that is unfair. Don't get me wrong, I gave K-On! series a 10/10, but Sora No Woto is more, it at least 12.
First, it has the perfect blend of plot, character, SoL, and moe. For me, this blend made it really enjoyable to watch. There is a bit of plot pushing the whole thing on, and the arc works across the whole series. The pacing, I found, was really quite good, and so was the character development. You really got to see each character in the great detail here (or as much you could with just one season).
The sound, the art, all very good. The story: even though it may be a slice of life, even people who normally don't like SoL will take a liking to this one.
Overall score: 10/10 in all departments.
