As a kid it aired on an anime channel and it was pretty much the only anime i watched until i grew older, back then I've seen it about 5-6 times all the way from the beginning to the very end.
Just like many other anime, this one is heavily centered around character development as well. As a result what we get are really good, and well detailed characters that make the center of the series. During the 3 seasons there are at least 6-7 characters that have deep stories and personalities to them, so chances are you are going to be attached to at least a couple of them by the end of the show. Other than the heroes going through an emotional journey in which they mature and find their places in their worlds (the plural form is intended) they also develop physically in their power levels, symbolizing this journey.
As for the story line, it's nothing too complicated or excessive, but it is OK. The real deal however are the fight scenes, being an action packed anime, there are tons of cool abilities used by our heroes and the villains they face, and they don't always win their fights either, which makes it much more realistic and exciting. In some instances you might even find yourself rooting for the bad guys, as the line between good and bad is not that clear like in real life.
Overall if you like action based anime with lots of fight scenes then this is a MUST WATCH for you.
