Sukeban Deka

A 16-year-old sukeban (delinquent schoolgirl) named Saki Asamiya is offered by the police to become an undercover detective to escape prison. She initially refuses, so the police blackmail her by offering to pardon her mother, who is on death row for killing her husband, eventually forcing her to accept. Put under the tutelage of officer Kyouichiro Jin, she is given a metal yo-yo that doubles as a weapon as well as a police badge, and is made to infiltrate high schools around Japan to investigate and stop criminal activities. Her first destination is her former school, Takanoha High School, where Saki's place has been taken by the three Mizuchi sisters and their ring of illegal activities.

The original manga has been described as a "massively popular gang girl series", and has sold over 20 million copies in Japan. Erica Friedman of Yuricon classified it as "one of the three classic girl-gang series" along with Hana no Asuka-gumi! and Yajikita Gakuen Dōchūki. Moreover, Friedman said Sukeban Deka influenced both and is "the origin of the whole girl-gang madness that filled the 1980s".

She also stated the series paved the way for series such as Revolutionary Girl Utena and PreCure. The series' popularity has proven to be longstanding as the TV drama's DVD rerelease sold 130,000 copies in 2005, which prompted Toei to produce the third live-action film. By 2013, it still had impact on popular culture with the TV drama ending inspiring the anime ending of Kill la Kill.