Masahiro (正広, Masahiro) is the third son of Hanzo the 1st and the current leader of the Shogunate's ninja. Although he dislikes the thought of turning Kouga and Iga loose, his loyalty to Ieyasu compels him to nullify the peace treaty to determine a successor to the Shogunate. He was among the audience that witnessed the duel between Yashamaru and Shougen Kazamachi at Sunpu Castle and would later witness the duel between Oboro and Gennosuke alongside his adopted son Kyohachiro and Lady Ofuku. While his demeanor can be considered cold and nonchalant, he was deeply moved by Oboro and Gennosuke's sacrifice and in the anime would later negotiate a new peace between their clans in which the promised spoils were evenly distributed among them both. He also recovers the battle scroll from Lord Ieyasu and secures it in a secret alcove of his manor so that the memory of the twenty chosen ninja would not be completely lost to time's passing.

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