The book is often viewed as a "part two" to Andrew Adams’ early work, offering deeper technical and philosophical insights. It covers a transitional period in Ninjutsu’s public perception, blending the esoteric practices taught in the 1960s and 70s—such as Kuji (spiritual hand signs) and concealment—with the more dojo-focused physical training that became prevalent by its publication in 1981.
The text emphasizes Jihi no Kokoro , or the "benevolent heart," arguing that true Ninjutsu is about finding harmony and protecting the spiritual and natural worlds rather than mere assassination. Ninjutsu, history and tradition
While highly regarded, modern readers often note the book's specific place in history. It was likely ghostwritten or heavily edited by Stephen K. Hayes, which gives it a more descriptive, prose-heavy style than Hatsumi's later works. The book is often viewed as a "part
Beyond basic postures, the book introduces specialized weaponry like feudal firearms, throwing blades ( shuriken ), and chain-and-sickle tools ( kusarigama ), accompanied by vintage photography often shot in rural Japanese settings. Community & Expert Perspectives While highly regarded, modern readers often note the
Masaaki Hatsumi’s (1981) remains a foundational text for anyone looking to separate historical fact from the cinematic myth of the ninja. As the 34th-generation leader of the Togakure-ryū tradition, Hatsumi provides a unique perspective that treats Ninjutsu not just as a combat system, but as a comprehensive philosophy for survival and spiritual development. A Bridge Between Two Eras
Hatsumi traces the lineage of the shinobi from the 12th-century Nanboku-chō period through their peak during the Sengoku Jidai (Warring States period).