After Gama and the others breach Unabara Castle gates, they find a place to hide and regroup, however Zenmaru can't help but toil over his own lack of ability. He goes off looking for enemies in order to become stronger, only to be attacked by one of the strongest of all Muho style warriors, Kiyomori Yamanoue! Faced with an opponent clearly out of his league, Zenmaru must draw his colossal sword, the Sadanaga! The true payoff of Zenmaru's year-long training will finally be put to the test!