In this book, the author explains the essence, truth, and wisdom of Ninjitsu, an art of a thousand forms and innumerable variations. Through his writing and many detailed pictures, the author reveals the hidden reality behind this fascinating martial art. A Ninja was someone whose very existence expressed the spirit of Budo. He would protect himself with techniques not of assassination but rather of sensation and an acute awareness of his natural surroundings. He would avoid unnecessary conflict, and even if armed with a blade, would find a way to win without staining