This band of ronin are known by the name of their preferred weapon, a long iron smoking pipe. Perhaps fortunately, the machi-kanshisha pipe is not well known in many parts of the Empire, and as a result many associate the name with the ronin band itself rather than the pipe for which they are named. The Machi-kanshisha are the guardians of the City of the Rich Frog, a major trade hub that sits in the narrow divide between the holdings of the Lion and Unicorn clans. Because of the militant nature of the two clans in question, who closely observe any significant violence near their borders, the Machi-kanshisha prefer to use their namesake smoking pipes as non-lethal weapons, employing them to subdue their foes rather than kill them. In the twelfth century, the City of the Rich Frog is annexed by the Lion Clan, and the Kaeru ronin family, administrators of the city and employers of the Machi-kanshisha, become vassals of the Ikoma family.
Generalization: Most of the Empire’s history has seen the Machi-kanshisha employed as listed above. If the GM chooses to modify a campaign set in the modern era, they can remain doing exactly what they have for so long without the Ikoma’s involvement.