Lady Snowblood

Based on the manga series of the same name, the film recounts the tale of Yuki, a woman who seeks vengeance upon three of the people who raped her mother and killed her half-brother. The film's narrative is told out of chronological order, jumping between present and past events.
In 1874, a woman named Sayo gave birth to a baby girl in a women's prison. Naming the child Yuki from seeing the snow outside, Sayo confides to the inmates who helped deliver the baby how she was brutally raped by three of the four criminals who murdered her husband Tora and their son Shiro a year ago. While she managed to stab her captor, Shokei Tokuichi, to death when the chance presented itself, she was arrested and imprisoned for life. Sayo then seduced many prison guards in order to conceive Yuki.
Due to difficulties during the birth, she dies shortly after telling her story. Her final words are for the child to be raised to carry out the vengeance against the three remaining tormentors. In Meiji 15 (1882), the child Yuki undergoes brutal training in sword fighting under the priest Dōkai to become her mother's wrath incarnate.
(Source: Wikipedia, Letterboxd, TMDb)
~~ Adapted from the manga series "Lady Snowblood" (修羅雪姫) written by Kazuo Koike (小池 一夫) and illustrated by Kazuo Kamimura (上村一夫).