I see some of these reviewers are giving this show a one star rating because it lacks a rich and developed story. Well, that isn't what this anime is all about. I absolutely agree that a good story-line is important, and I highly appreciate the creators that take the time to make them. This show may have a semi-simple story to it (depending on your point of view), but it is soo fun to watch! That's all there is to it, and that's all it needs! It was very refreshing to see a show that counters the seriousness and "good story" of other combat oriented shows, where the main character becomes so stupidly strong that their "good story" eventually becomes pointless and ridiculous.

There aren't many shows that I count as great, but this is surely one of them. Not for the depth of the story (although the story is deeper than these reviewers seem to think), but for the sheer fun and entertainment of watching. At the end of the day, that is what counts.