I decided to watch this anime on a whim after revisiting The Girl Who Leapt Through Time the other night. The concept is something that probably every kid thought of at one time or another: what would it be like if gravity reversed itself? With it's twisting perspective and constant threat of "falling" into the sky, this film was disorienting and made my stomach turn. As someone with acrophobia, even standing at the base of a skyscraper gives me vertigo so your results may vary. The actual details of the plot are kind of dumb and the revelations presented are never really explained in a satisfactory manner. There is also the uneven voice acting you'd expect from a second tier anime (IMHO, only Miyazaki is first tier). But the clever idea and neat visuals were enough to keep me interested until the end.