It's time for Manji's dimwitted-yet-likeable cellmate, Dewanosuke, to shine . . . or die! Searching for the key to immortality, the twisted doctor Burando finally feels that his experiments are leading towards success. However, the Shogun's bangashira, Habaki Kagimura, grows impatient and decides to "up the ante" in the tests on Dewanosuke's regenerative abilities. Also, while all of the Itto-ryü warriors are supposed to be keeping a low profile, one cute sparkplug is about to threaten everything. Yes, it's the return of Döa, the feisty Itto-ryü renegade who's been causing so much trouble for Rin! This time, however, Döa's headstrong attitude may turn up something very essential to Rin's search for her beloved, missing Manji.