Saki Asamiya

is a Japan detective action shōjo manga series written and illustrated by Shinji Wada and serialized on Hana to Yume. Sukeban Deka has been adapted into three live-action television series, an original video animation series and three feature films, the latest of which was released in 2006 as Yo-Yo Girl Cop.

The series follows a delinquent schoolgirl who is taken in by the government and forced to fight crime to redeem herself. She is given the codename "Saki Asamiya" and a metal yo-yo that doubled as a badge and made to infiltrate high schools around Japan to investigate and stop criminal activities.

;Saki Asamiya

The bitter heroine of the story. Saki is a natural born fighter who enjoys getting into scuffles with various people. She never backs down and is very stubborn.