Living by the sea, protecting the sea, and journeying across the sea…They’re the BLUE MERMAIDS! Because of a shift in tectonic plates around 100 years ago, Japan lost much of its area to submergence. To preserve Japan’s territories, Coastal Cities sprung up, one after the other. Eventually, they became Marine Cities, and along with the expansion of sea-lanes to connect them, the need arose for a sizable staff to protect the seas. At the same time, maritime jobs were becoming more popular among women. Hence, the BLUE MERMAIDS had become every female student’s dream job.
Following Oorai's victory over Saunders, the school's next opponent is Anzio. This is an OVA which covers the battle of Oorai versus Anzio, which was not fully shown in the regular anime series.
Hinata no Aoshigure es una “historia de amor” protagonizada por Hinata, un chico muy bueno dibujando que se enamora de su compañera de clase, Shigure, una popular estudiante de su clase. Sin embargo, a Hinata no se le da bien hablar con la gente, por lo que mantiene sus sentimientos en su imaginación y dibujos. Hasta que un día…