Based on Kurosawa Akira's famous Seven Samurai movie.In an alternative past with highly advanced warfare machinery, on a planet that might have been called "Earth", a war involving mechanized samurai took place. After the long war, people enjoyed a modest peace. The effective rulers of this new time were a small group of high-class merchants, wealthy and powerful enough to negotiate with the Emperor himself through His envoys, to hire all the military power they felt like, and to keep a harem at their service.In those days, villagers everywhere suffered in the hands of bandits, ruined samurai who no longer followed their code of honor. After the war ended, they lost their purpose to fight, and they turned their efforts into robbing the villages of their crops and women in order to sell them. Because the villagers had no way to fight against them, they had to obey the bandits' orders, or suffer heavy punishment. This also meant that the villagers had little rice of their own, and had to eat very little in order to not starve to death. This happened to many villages everywhere.One year, before harvest season, the head of the Kanna Village proposed that they should hire samurai to protect them from the bandits. Rikichi, a man full of energy but who is easily frightened, Kirara, the village's water priestess, and Komachi, Kirara's younger sister, go into a town to look for samurai to help them.