Sukeban Deka 1985 (Japan), also known as Delinquent Girl Detective is Japan drama premiere on Apr 11, 1985 on TV Asahi
Asamiya Saki was the ruling Sukeban of Takanoha Gakuen High which eventually led her to prison. Her mother was also incarcerated on death row - charged with the murder of her husband. Saki was then approached by Kurayami-Shirei with a deal - work for "The Cabinet" as an agent for the new "Sukeban Deka Project" and she and her mother would be freed - or she could just rot in jail. An offer she couldn't refuse.