Story/Characters: More-or-less, this carters to soley Air Gear fans who wanted more. However, I definitely think it's lacking. For anyone, who hasn't seen Air Gear, this wouldn't make any sense. For those who only watched the anime, the OVA is just a hodgepodge of scene without fluidity. It's as if they liked a certain arc, picked out a couple chapters they liked, and simply animated those without making the chapters in between. They're a lack of explanation and a real ending as well. So the only ones who wouldn't be completely confused are the ones who keep up with the manga and even there it's disappointing. I was excited at first because I thought they would be animating the part of the series were everything gets more intense. However, it disappointed. It does have humour and action, but lacks a lot in order to be considered worthwhile.
Animation/Sound: Same as the series except the scenes are choppy.
Overall: Only watch if you keep up with the manga or it will not make sense. Very sporadic and jumpy not just in between episodes but within the episodes themselves. You get introduced to some new characters but there's not too much development anywhere. Overall, disappointing.