The Kitakami Chronicles

A Japanese torpedo cruiser learns that her family is in trouble and that they would be killed off if they didn't pay up. It is up to Kitakami, and her sister Ooi, to step up as being mercenaries in a civil war in China in order to help pay off these debts. Read about Kitakami's rise to fame as the "Demon Lord" and find out that this civil war isn't all what it seems to be. This tale is a prequel to the Kaga Saga.