the eponymous "Last Samurai," a former daimyo who was once Emperor Meiji's most trusted teacher. His displeasure with the influence of Omura and other Western reformers on the Emperor lead him to organize his fellow samurai in a revolt, which he hopes will convince the government not to destroy the samurai's place in Japanese society. Katsumoto is based on real-life samurai Saigō Takamori, who led the Satsuma Rebellion.
Koyuki as Taka Katsumoto, widow of a samurai slain by Nathan Algren and younger sister of Moritsugu. She and Algren develop feelings for each other, and she gives him her husband's armor to wear in the final battle of the rebellion.
