Mushibugyou

Plot
Mushibugyo is set in Edo-era Tokyo in the early 1700s when the eighth shogun Tokugawa Yoshimune has ordered boxes to be installed so commoners can submit their thoughts. After hearing their opinions, the shogun creates a new magistrate unit called Mushibugyo to protect the people in the heart of the city. Each member of the unit happens to be a specialist with unique fighting skills.

Official

 * WebSunday
 * Club Shogakukan

Other Sources

 * Wikipedia
 * Anime News Network (Anime)
 * Anime News Network's Mushibugyō (manga)
 * Anime News Network's Jōjū Senjin!! Mushibugyō (manga)