Nishijima Katsuhiko

Aika is an intelligent and athletic high school girl. Competently she successfully passes the salvager's licence test, obtaining a C-class license. Yet, she is young and hot-headed, so much so that Gozo still treats her like a child. Due to this personality, no one is willing to hire her for salvaging jobs. Eager to get started with salvaging, though, she decides to post an…

A catastrophic earthquake has left Tokyo, and most of Earth for that matter, under sea level. Aika is a salvager who retrieves various remains from the watery ruins. When Aika accepts the dangerous mission to locate and retrieve the mysterious Lagu, she discovers that other dangerous parties are also interested. Source: ANN

In an alternate universe, A-ko and B-ko are bounty-hunter partners who hunt giant tortoises on a sand planet. When C-ko is kidnapped by a gang of space pirates, A-ko and B-ko set off to rescue her — thinking only of the reward money offered by her wealthy father. Aided by a pint-sized Galactic Police Officer named Maruten, the girls discover that C-ko's abduction is part of a…