As Rousai pestifers Okoi to find out the fighting abilities of the remaining Kougas alive, Koshiro is sent to tell Oboro that she must meet up with Tenzen. However, when Saemon is able to get into Tsubagakure in the disguise of Yashamaru, what he sees will be the most horrible thing in his life.

As the rest of the Igas cross the sea, Tenzen makes an advance towards Oboro, leaving Koshiro torn between his master and the clan leader. With all the confusion this makes for the perfect opportunity for an enemy to make his move.

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