The story follows Sasuke, a young ninja, set immediately after the Battle of Sekigahara when Tokugawa Ieyasu assumes the position of shogun. Sarutobi Sasuke, also known as “Jump Like Monkey Sasuke,” was a renowned ninja serving Sanada Daisuke, who fought on the losing side against Ieyasu. Though it was once believed that he committed suicide after being trapped inside a castle, the narrative reveals that he actually escaped. Moreover, the name Sarutobi is not the moniker of a single ninja but represents an entire ninja clan.