In the 1970s "mix" films, films that could not decide if they were serious or satire, were very popular. (Check out for example the Matt Helm series with Dean Martin). This film, oddly, seems to retrieve that vibe, presenting the story of a high school girl who is also a professional killer in a style closer to anime or a comic strip, than to than real life. Even the action sequences are speeded up, constantly reminding the viewer that nothing on the screen is real. To be honest, that was a tough sell in the 70s, and an even tougher sell today. The only redeeming quality is Kanna Hashimoto, playing the lead, who thankfully has a natural sweetness that comes across. On the bright side, your six year old will find this film absolutely fascinating. ((Designated "IMDb Top Reviewer." Please check out my list "167+ Nearly-Perfect Movies (with the occasional Anime or TV miniseries) you can/should see again and again (1932 to the present))