Seventeen years ago, in the 20th year of the keichou era, at osaka, during the summer campaign, handmaid otashi reveals to senhime that she is in fact namemba, an iga ninja. In the present at edo castle, tenkai is trying to find tadanaga and calls in hadaebou. Hadaebou travels to jison'in village and asks for the ninja's assistance to defeat joujin and the murakumo, but they are reluctant to become involved. Meanwhile the kishuu prepare to attack the murakumo with canons, but joujin reassures tadanaga that they are well-defended. He opens fire with his own canons, ...