Age Level: 9 and up Grade Level: 4 and upThe name's Chase Cooper, and this is my tenth diary as a 6th grade ninja. If I had a penny for every time trouble came knocking at my door... I'd have ten pennies. A few days have passed since the green ninja clan appeared, but that's more than enough time for them to give me a headache. It doesn't help that my attention is stretched between a crazy robotics competition, an annoying pirate poser, and the ex-leader...