I seriously dont know what lots of people have against this anime, its great and very underestimated. I guess maybe the CGI animation they do on the dragons really doesn't suit their taste and it ruins the whole series for them.
Story
This series is shounen and romance geared, if its the mecha or the action you are mostly interested in this is not for you.
Basicly this series mixes some half-baked action(I'm not saying the action is bad its just not the focus and is pretty rare in occurance) and some deep character designs, development and an overall shallow plot.
The thing with this series is that while the main plot is not so great they focus on character depth and the sub characters story is often being told while the main story is progressing but is at most time more interesting then the main plot.
Art
I really like the art, I dont really like the CGI lets just say it doesn't bother me.
The only thing is.... Huge bouncing boobies kind of buggs me, there's some in this series.. But be not alarmed its not close to the over-the-top ecchi shows.... I found it annoying but bearable. Aside from this "issue" the animation is top notch nice looking and smooth.
Sound
Great intro song, quite decent outro and the background music is there, very plain but not bad.
Character
The characters in this series are very interesting atleast most of them, there are some exceptions but there are lots of characters that will really surprise you in this series. You never know whats going to happen with them, they develop and change just when you thought you knew them and at most times in a totaly logical way but no way near the usual archtypes.
Enjoyment
Its fun, to not really know what is going to happen next, to not really know what a character is going to do. Its so refreshing compared to other shounen anime where the character archtypes are so predictable its silly. Its basicly like this, instead of looking forward to and wondering how they are going to beat enemy boss, you're sitting there wondering what's going to happen before they meet the boss.
Overall
Surprising action packed romantic shounen series, what's not to love? The originality of this series is really impressive!