this clip is the opening song to the anime simoun: girls in airships. if you paid attention to the clip you might have seen a grand total of two males in the clip. this anime presents a unique take on puberty, everyone is born female. when puberty hits around the age of 17 they choose their permanent gender, be it male or female. you may have also noticed that the ladies are fairly affectionate towards each other. i'm not sure how big a story plot this is in the anime, as i have not yet seen any of the episodes. now don't think that this show is all fanservice. their is a war going on over the technology that drives the simoun airships and the "sibyllae" that pilot them. one thing is certain, this anime is just weird enough to be put on my must see list. :)