Wtf???? Hm Lets think of a porn-plot for Anime... Hm First there have to be only woman, OK and then, yeah, when they get sexual pleasure they, Hm, Yeah! - They transform!!! Hm, transform into what... Yes! - Weapons! Wtf?
So that's basically what this is about. There are Woman captured on an island, and they got some sort of virus, why the one half of them transform into weapons when they present their tits and the tits get squeezed. And the other half can control this weapons. And then they fight. For totally stupid reasons.
Thats really all the show is about, there is no real story going on, basically all you see this series are how woman squeeze other woman's tits, how the woman groan and then transform into weapons.
So the only thing, which differentiates this show form an usual Hentai-porn is that the genitalia are not shown. Though Japan censors all genitalia even in Hentai-porn, so id say there actually is absolutely no difference between them.
So if you want to jerk of, OK watch this, else... Don't!