Blade of the Immortal

Habakis scheme gets Manji trapped in a dungeon. Habaki uses a doctor, Burando Ayame, to try and solve the mystery of the immortality. For the sake of the advancement of medicine, Burando sinks a scalpel into Manjis body. Meanwhile, while waiting for Manjis return, Rin is caught up in a strange cohabitation with Doua and Isaku, who had been searching for a place to stay.

Ever since the Dewanosuke incident, Burando kept making blunders. He is finally thrown in solitary confinement by Habaki, and goes insane. But as a result of his madness, Burando grasps something important about the immortality experiments: That humans are essentially otters. Meanwhile, Rin and Doua resolve to infiltrate Edo Castle to rescue the surrounded Manji and Isaku.

After his failure at Edo Castle, Habaki is dismissed as head clerk. But still, in order to annihilate the Ittou-ryu, he heads up the Rokki-dan in hopes of subjugation. However, the new head clerk, Ugen, decides that Ittou-ryu, having left Edo, is now in the clear. Furthermore, to ensure he abides by the agreement, Habakis wife and children are taken hostage.

Manji is wounded from his duel with Shinra. Renzou picks up a sword and tries to kill Manji, but Rin and the others talk him down. Meanwhile, Habaki is livid upon learning of the attack on Edo Castle. Habaki wants to pursue Ittou-ryu, even in absence of its leader. As a result, one of the Ittou-ryu enters a mountain village. Habakis daughter, Ryou, tries to subdue him to be of use to her father.