Japan, 1576. A weakened central government struggles to maintain its power as warlords fight each other to unify the country under their command. On dry land, the name of Oda Nobunaga resounds more and more firmly; However, in the Seto Inland Sea, the Murakami Pirates are the absolute dominators, controlling the main trade and transportation routes in that region.

Kyo is the daughter of Takeyoshi Murakami, head of one of the clan's factions and the man who has led pirates to be feared in western Japan. Despite being 20 years old, her indomitable character and her physical features, similar to those of Europeans, make her remain single. However, her fate does not please her and thus, ignoring the insistent rumors that the battle against Nobunaga is very near, she decides to embark on a journey that will change her life forever.

Thus begins an unforgettable adventure in which we will witness spectacular battles that take place on land and sea, an endless and colorful parade of warriors, a panoply of military tactics as unconventional as the militarization of fireworks and a time when that the fate of men and women was decided by fighting hand to hand.