The film's final act features a major twist regarding the Chairman's involvement in Sayuri's life. After years of believing that her mentor, Mameha, chose her out of rivalry with Hatsumomo, Sayuri discovers that the Chairman was secretly her benefactor all along. After their brief encounter on the bridge when she was a child, he recognized her later as a maid and personally asked Mameha to sponsor her training, footing the bill for her immense debts. He kept his distance out of loyalty to his friend, Nobu, who had saved his life and was infatuated with Sayuri.
This revelation drastically alters the context of Sayuri's entire journey. Her relentless struggle to reach the top of the geisha world in order to catch the Chairman's eye was, ironically, orchestrated by the Chairman himself. The ending shows Sayuri intentionally ruining her chances with Nobu (by being caught in a compromising position) to free herself. The Chairman finally steps in, and the two reunite in a teahouse garden, where he confesses his role and his love. The film concludes with Sayuri accepting her role as his danna (patron/mistress). Her final voiceover acknowledges that while a geisha can only ever be "half a wife," she considers her childhood prayers answered, finding a bittersweet but genuine happiness in her hidden, secretive love.