I like to make my review short, sweet, and down to the point. If you want to know about the plot of this anime -- read what anime-planet wrote. (I say it's not to shabby).
*Note: When I re-read over the description anime-planet has I suddenly realized that Toru is 20 years old and Chaika is 14... yikes...*
Animation: This is one of those animes where you can just sit back, relax, and enjoy the art. Though I must worn you: *Little Spoiler* in the first episode when they kill the unicorn I was NOT expecting that much blood..
Sound: Commenting on the voice actors (Subbed) they did a really amazing job on this one. I dont know what really stuck out for me other then just how emotion they seemed to feel.
Characters: I really didn't like how we got only a bit of Chaika's backstory and I didnt even realize Toru was in a war... But I do understand that theirs going to be another season -- so I'm hoping they will fill a bit more of the mystery then c:
Overall: This is a really good anime. I often found myself totally lost in the story. I can't help but bag on Chaika's character for being an airhead who's good with a gun but I try not to hate.
In the end, this anime won't be the best in the world because of its plot holes and how much the fan base wants to kill Toru's sister (OH I can't be the only one [Her name slipped my mind]). But it is a great watch, and I'm sure you will enjoy it just as much as I did. Even with just watching the first episode you get a feel for how the seasons going to be set up. Enjoy ! ^^