Undercover Geisha (2003)
Original title: 夜桜お染
Undercover Geisha is a 2003 Japanese-language drama movie directed by Kōsei Saitō, with a running time of 8h 10m. It stars Mayumi Wakamura, Takashi Naito and Kataoka Ainosuke VI.
Osome is a geisha and spy in the Tokugawa period. When she was very young she lost her family to a terrible fire and continues to search for her surviving brother. Along her journey she discovers much of her family history and gains new friends.