Iga and Kōga — the two homelands
The historical Ninjutsu schools emerged primarily in two mountainous regions of central Japan: Iga and Kōga (sometimes spelled Kōka). Both regions had a similar geography — wooded, isolated, difficult for centralized authorities to control — and developed similar warrior cultures. Both produced famous Ninjutsu lineages that survived into the modern era in some form.
The two regions had their own clans, their own dialects of the warrior arts, and their own famous masters. They sometimes cooperated, sometimes competed. Together they form the source-soil for almost everything we recognize today as historical Ninjutsu.
Hattori Hanzō — the most famous Ninjutsu master
If only one name from Ninjutsu history is known in the West, it is Hattori Hanzō. The Hattori family came from Iga and rose to prominence serving Tokugawa Ieyasu, the founder of the Tokugawa shogunate. Hanzō's role in the consolidation of Tokugawa power is well-documented in Japanese sources.
What is less appreciated outside Japan: Hanzō was not just a stealth operative. He was a senior military commander, a strategist, and the head of a clan with deep ties to the magical-mystical practices that the Iga tradition preserved. The Tokugawa shoguns valued the Hattori not for assassination skills but for the broader warrior-administrative capacities of an entire clan rooted in Iga tradition.
Momochi Sandayū and the three great Jōnin
Within the Iga tradition, three families produced the senior commanders — the Jōnin — of the historical period: Hattori, Momochi, and Fujibayashi. Momochi Sandayū became legendary as a strategist and clan leader during the Sengoku era. The Fujibayashi family is best known as the editors of the Bansenshūkai, the most comprehensive classical manuscript on Ninjutsu.
The Jōnin were not the field operatives. They were the strategic minds — the ones who developed methods, trained the Chūnin (middle-rank), and oversaw the Genin (field operatives). The hierarchy mirrors regular feudal military organization, but the content of training was distinctively Iga.
The three classical manuscripts
Three written sources give us a documentary window into historical Ninjutsu:
Bansenshūkai (1676) — compiled by Fujibayashi Yasutake. The most comprehensive of the three, with detailed material on strategy, equipment, philosophy, and operative methods. Includes substantial sections on the spiritual-magical dimension of the practice.
Shōninki (1681) — by Natori Masazumi (Natori-Ryū). Focuses on the inner cultivation of the Ninja, with extensive philosophical material. Some translations exist in English.
Ninpiden — older than the other two, attributed to Hattori family transmissions. Focuses on technique and method.
Reading all three carefully reveals how much of the historical training was inner work: meditation, breath, mental discipline, and the operative use of Kuji Kiri. The action-cinema image collapses when you see what the masters actually taught.
The Taguchi Lineage and the historical record
The Taguchi Lineage stands in continuity with this historical stream — not as a reconstruction from documents but as a living transmission. Taguchi Sensei received from his teachers what they received from theirs, going back through the layers of the tradition. The full chain of teachers is documented within the lineage but is not made public.
What is preserved in the Taguchi-Ryū today includes elements that the manuscripts only hint at: the operative knowledge of Kuji Kiri as warrior tool, the synthesis with Wing Chun and Escrima that the older Ninjutsu was already doing implicitly, and the explicit emphasis on the mediumistic dimension that the older masters lived.
How the lineages survived to the present
The historical Ninjutsu lineages did not survive in their original form. The Meiji Restoration (1868) ended the feudal era and with it the structural role of the warrior clans. What survived were family lineages that preserved the inner material, often in attenuated form, sometimes very privately.
Today, two main streams have reached the modern era — the Bujinkan school under Hatsumi Masaaki Sensei, and the Taguchi Lineage under Taguchi Sensei (now under Mark Hosak as his direct successor). Both are real, both are alive, both authentic. They draw from overlapping but distinct historical roots.
For English-speaking seekers interested in the deeper material of the Taguchi-Ryū, the home community is the Japanese Grimoire Society.