Grumpy Ninja

Grumpy Ninja is the grumpiest ninja ever.
Find out what happens in this comedic book about managing grumpiness.
Life is hard! It's even harder for children who are just trying to figure things out.
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The new children's book series, Ninja Life Hacks, was developed to help children learn valuable life skills. Fun, pint-size characters in comedic books easy enough for young readers, yet witty enough for adults.
The Ninja Life Hacks book series is geared to kids 4-10. Perfect for boys, girls, young readers, students in primary school, or toddlers. Excellent resource for counselors, parents, and teachers alike.
Collect all the Ninja Life Hacks books and box sets!