One of the best shounen animes I've ever seen. One word to sum it up: Badass. From the detailed art to the opening/ending themes, it really left me with a strong impression.
Story: 9.5
Wonderfully written; balances fighting and other themes while still keeping the viewer's attention. (I would've given it a 10 if it weren't for a 'recap' episode; however, that is my personal preference, and I know that it still fits with the order.)
Art: 10
Fluid... Just. Really. Fluid. Animations. Nothing much to say other than that lol.
Sound: 9.5
. . . Made me rethink my generalizations about 'hip hop' and 'rap' music. ;) BGM was good.
Character: 9.75
They were already great to begin with, but they developed into greater characters. I thought that the VA's were a perfect fit for their characters.
Enjoyment: 10
It seriously makes me want to learn swordsmanship lol. ;) Their journey had a lot of various stories that.. hmm.. you sort of 'feel' the 'feeling'. O.o
Overall: 10