During the early stages of the industrial revolution, feudal Japan is engulfed in turmoil. The ruling shoguns wield their power with brutal oppression, employing beatings, imprisonment, rape, and even murder to keep their subjects in line. The bloodshed must end. A group of samurai has united, embracing new weapons and technology to confront the tyranny. Ichimatsu is one of these fighters. By day he keeps a low profile working at a local tavern; at night he frequents brothels, and later, under the cover of darkness, he delivers decisive gun‑barrel justice. He is Samurai Gun.