Here’s one to look out for at the cinema: Yoyo Girl Cop, or Sukeban Deka. Based on a popular manga series from the late 70s to early 80s, Tokyomango describes it like this:
What’s not to remember about a hot delinquent bad-ass teenager who infiltrates high schools to solve crime? Boys loved her short skirts and girls loved that she was stronger and smarter than anyone around. The protagonist, Saki Asamiya, doesn’t carry a gun or a samurai sword or anything, just a yo-yo and a whole lot of attitude.
From the name alone, it’s obviously not going to be a very serious movie. According to Wikipedia, Saki Asamiya has a yoyo that doubles as a “deadly weapon”. Here’s the trailer: