A brutal tale of chivalry! A new Arthurian Legend!The isle of Britain, Ancient England. The knight Mordred fights off the endless Saxon hordes laying siege to the town of Exeter. But the Saxons, skilled in the art of war, are a terrifying force, and Mordred is gradually driven deeper and deeper into the depths of despair. However, news spreads one day that relief is coming in the form of King Arthur. Will this unrivaled hero, who has made his name known throughout all of Britain, be the town's salvation, or...?
The manga's story begins when a peasant named Hanbē asks a girl named O-haru for her hand in marriage, but O-haru confesses that she is already thinking of another man named Masakichi from a neighboring village. When Hanbē seeks out Masakichi, he finds that Masakichi possesses a sword and the skills to use it, despite being a peasant.