In a land ravaged by war and ruled with an iron fist by the ruthless tyrant warlord known as the Iron King Akuma Ryota, a skilled but vengeful swordsman named Kaito encounters Anya, the true heir to the throne that was stolen from her. Their fates become inextricably linked as Kaito, driven by a burning desire for vengeance against the Iron King who masterminded the downfall of Kaito's family, joins forces with Anya's protectors in a quest to help her reclaim her rightful birthright as the land's ruler.