The show follows Ichimatsu, who is part of an elite unit known as Samurai Gun. The Samurai Guns receive their orders from an organization known as the Council, who are in opposition to the Shogun. Ichimatsu is one of the original Samurai Guns and considered much more powerful than the newer Samurai Gun recruits. When he was younger, Ichimatsu witnessed the rape and murder of his older sister. Being of mixed decent, Ichimatsu already has a bit of a disposition, but having this scar in his memory has caused him to be even further removed from females when it comes to issues of intimacy. Often through the show Ichimatsu will seek the companionship of one female in particular, a prostitute named Ohana, who he often only wants to have conversations with. Throughout the entire series, Ichimatsu is seeking out the man who raped and killed his sister.