This is one of those animes were panty-shots and ecchi content are more prevalent than the actual plot.
Story: What little I could gather from the story is that Aika and her sidekicks are treasure hunters in a post-apocolyptic world. in order to save their business, they take on a job to find some sort of energy-thing. As they reach their target, they are attacked by Delmas, weird girls in skimpy outfits with a truly bizarre leader (and his even more bizarre sister). After that, the plot more or less disolves into panty-shot filled fight scenes. (There's also the sub-plot of Aika's fancy corset)
Animation: The animation is decent, but I have to wonder how the animators felt after drawing panties for that long.
Sound: No comment
Characters: With only 7 episodes, there wasn't much they could do to make the characters rounded. The characters were a bit on the insane side, though. From the vindictive, rather mental Nena to the cross-dressing Shuntaro... the cast is just so weird.