Masayuki Ikeda

At a time when nations are warring, a sword with mysterious power called "Heaven's Sword" is stolen. The sword is said to give its wielder the power to conquer the world. Various ninja all over Dokutake Castle and beyond also manuevering for this sword of immense power. Rantaro and his classmates are assigned to retrieve the stolen sword, their first real ninja mission.

Set in the 18th century, the show follows the Shogun Yoshimune, who likes to disguise himself as a low-ranking samurai and go into his capital of Edo to see the life of the common man, as well as to seek out and punish evildoers who would hurt his citizens. He is aided by Magistrate Oo'oka and a vivacious fireman, Tatsugoro, as well as a rotating cast of other recurring characters. Along with Zenigata Heiji and Mito Kōmon, it ranks among the longest-running series in the jidaigeki genre. Like so many other jidaigeki, it falls in the category of kanzen-chōaku, loosely, "rewarding good and punishing evil."

Humanistic detective stories that took place in an inn called 'Kawasemi'.