Female Prisoner: Caged! (1983)
Original title: 女囚 檻
Female Prisoner: Caged! is a 1983 Japanese-language drama movie directed by Masaru Konuma, with a running time of 1h 8m. It stars Mina Asami, Ryōko Watanabe and Nami Matsukawa.
A young woman who escaped from prison is eventually captured and brought back. The evil warden decides to make her a pet project and tries to break her down with torture, gang rape and by turning her friends against her.