True Story of a Woman in Jail Continues (The Nikkatsu Erotic Films Collection)

"In Japanese with English subtitles. In this shocking sequel to TRUE STORY OF A WOMAN IN JAIL: SEX HELL, Mayumi (the tough inmate from the first film) emerges from solitary confinement to find an all-new gang of bullies picking on a meek, young female prisoner. Mayumi is now a much harder soul who takes no attitude from anyone, and she turns savage when the poor girl is enslaved by Yakuza! No one is safe as Mayumi takes down the entire jail in a sudden act of violent carnage.