Ninjutsu is arguably one of the most controversial topics in the martial arts world. There are numerous organizations teaching Ninjutsu worldwide. Some claim to teach traditional Ninjutsu while others teach a modern interpretation of the art. These two scenarios are not uncommon. It is almost impossible to authenticate traditional Ninjutsu claims while the modern styles are a new interpretation of the past. Much rarer is finding a reclusive Ninja school in the heart of Japan that almost no one in the world has heard of. A Ninjutsu organization that has remained veiled in secrecy for ages and is about to go extinct. A Ninjutsu family that has the backing of Japanese historians, the government and a museum. A find like this is unheard of. Author Daniel DiMarzio unknowingly stumbled upon just that while living and working in Japan. For the first time in English, with the permission of his teacher, he brought this Ninjutsu organization to the Western world by publishing this book in 2008.