Behold the widescreen awesomeness of Meiko Kaji as Female Prisoner 701, the metaphorical Betsy Ross of Japan.
Ito's experiments in style are eclipsed in many viewers' minds by the human special effect that is Meiko Kaji. She's part of the Seventies pantheon of valkyries -- joining Pam Grier, Claudia Jennings, Angela Mao, Christa Lindberg, etc., who still set the cinematic standard of violent female empowerment. Kaji could wield a sword (in the Lady Snowblood films), a gun or whatever came to hand for killing or torturing purposes. In this one, she's hogtied in solitary and a trustee is torturing her by ladling hot miso soup on her body. How can she fight back. By catching an edge of a towel in her teeth and pulling it out from under the trustee so she spills the entire pot of boiling broth on herself, that's how. Matsu's resourceful that way, and once she's finally free the men who tormented her don't stand a chance. As her "Vengeance Song" plays she picks them off one by one, with only her once-beloved corrupt cop putting up much of a fight. As Matsu (aka Scorpion) Kaji's best known for her taciturnity. Apart from her narration of the flashback, she probably has less than a dozen lines of dialogue in the whole picture, and one of those is "You talk too much."
This version of the English-subtitled trailer was uploaded to YouTube by asianwack.