One Quarter Ninja by Marie Diffee Wright, Cory Godbey
Mito isn't your average ninja. In fact, at just two-inches tall, he's way below average...in height, that is. Life is hard enough for him in his hometown of Tokyo, but when he unexpectedly finds himself trapped on the other side of the world, life gets even harder. Lucky for Mito, Ethan Elliott, a clumsy, fearful fourth grader, comes to his rescue. When Ethan needs some rescuing of his own, Mito sets out to help.