Delinquent Detective

Teenage criminal Saki Asamiya, who has spent time in a juvenile detention center, is offered the opportunity to prove herself and postpone her mother's potential execution by acting as an undercover police officer. Saki's task is to return to her high school and look into the corruption and unexplained murders among the students, armed only with a special yo-yo. But, in order to find answers to her school's problems, she must battle the affluent and powerful Mizuchi sisters, who moved in and took over after her earlier expulsion.