 The character was a , a law-enforcement official of the Tokugawa shogunate, with broad jurisdiction over the Kantō region surrounding the shogunal capital at Edo.A common alternative name for the post was "Hasshū-mawari", alluding to the eight provinces ("hasshū") of the region; the title incorporates this name.He traveled incognito, investigating the places he visited, and donned white costume for the finale, where he killed all the wrongdoers.