With Tousai dead and lord Teyasu's ninja scroll lost to the Iga, the plan to rip the Kouga apart unnoticed is slowly falling apart. With her dying words, Okoi tells Saemon the registry's true location. Determined to make it out alive, Saemon will hold up his ruse long enough to walk out with the scroll in his hands and take vengeance for his sister's death along the way.

Saemon, now having the appearance of Nenki, begins to confront Hotarubi. As the Kouga ready themselves to continue on to Sunpu, Tenzen knowing they can not wait for Nenki and Harutobi, leads the Igas across the ocean in hopes of stopping Gennosuke before he reaches his destination.

Still on the sea, Gyobu uses his art to move around freely to take care of the remaining Iga, but Tenzen proves to be a toilsome foe to kill.

As Hyoma and Koshiro battle, it is revealed that Hyoma was Gennosuke's mentor teaching him how to use his ability.

Oboro and Akeginu discovers the lifeless bodies of Hyoma and Koshiro. Thinking that Koshiro was killed by Hyoma, Akeginu repeatedly stabs the already dead body of Hyoma.