It is the dawn of the industrial revolution, and feudal Japan is in chaos. The ruling Shoguns are using their abusive power to instill fear and dominance over their oppressed subjects. Beatings, imprisonment, rape, and even murder are the tactics adopted to maintain their reign. The bloodshed must end. A group of samurai have banded together, and with the development of new weapons and technology, they have both the will and the means to stand up and fight. Ichimatsu is one of these fighters. By day, he works incognito at a local tavern; in the evenings, he frequents brothels; and by the dark of night, he doles out some big-time, gun-barrel justice. He is here to help. He is Samurai Gun.