NAGANO--Hand-copied versions of part of “Bansenshukai,” one of the three major ninjutsu (ninja art) strategy books, were recently discovered at the Sanada Treasures Museum here, leading ...

Looking for your next book? How about some graphic novels instead? Okay okay, now what if they starred a group of Teenage Mutant Ninja Turtles? If you’re on board thus far, then you sound like ...

But not as big as the imagination of 11-year-old Gunner Duck. Gunner is the author of Ninja Puppy. A series of eight published books. It all started when he was five and given a challenge in ...

In this latest instance, researchers discovered the first known copy of a legendary ninja training manual, making it an unprecedented find. The book on ninja secrets and techniques ...