The Ninjas Didn't Exist

Video summary

Iga’s samurai spies became Tokugawa castle detectives, while today’s ninja myths emerged largely from 20th-century films and fiction.

The video separates ninja legend from the history of Japan’s shinobi. During the 16th-century civil wars, Iga and Kōka samurai used espionage, disguise and ambush; Oda Nobunaga’s 1581 invasion crushed Iga, but its warriors later helped Tokugawa Ieyasu escape danger and eventually become shogun. Under Tokugawa rule, their descendants served as castle guards and intelligence gatherers, uncovering an alleged 1651 plot by Marubashi Chūya to burn Edo and seize the young shogun’s government. Peace and isolation made the work less dramatic, while Iga stories and kabuki developed supernatural, black-clad stealth warriors. In 1854, spy Sawamura Yasusuke observed Commodore Perry’s American fleet, but Japan’s opening and the Meiji Restoration made the old castle detectives obsolete. The modern ninja image came later: Fujita Seiko’s 1936 claims and postwar entertainment helped popularize signature weapons and ninjutsu, many of which were recent inventions.

Chapters

1. 0:00Start: A 1580 Azuchi Castle attack on Oda Nobunaga
2. 1:12A Shattered Empire: Oda Nobunaga’s 1581 invasion of Iga
3. 4:16History on a Knife Edge: Hattori Hanzo saves Tokugawa Ieyasu
4. 6:48Sniffing Out Conspiracy: Marubashi Chūya’s alleged 1651 Edo plot
5. 10:46The World Comes to Japan: Perry’s 1854 gunboats and the end of Iga’s legacy
6. 13:06Enter the Ninja: Fujita Seiko’s 1936 claims and the postwar myth