When you hear the word ninja , what comes to mind? Black-clad assassins? Shuriken and smoke bombs? While pop culture has shaped a thrilling image of ninjas, the reality is far more complex — and fascinating. Were Ninjas Real? Historically known as shinobi , ninjas were covert agents in feudal Japan who specialized in espionage, sabotage, infiltration, and even assassination. They were often hired by powerful warlords (daimyō) to gather intelligence or carry out missions that required stealth and cunning. While some ancient texts claim that ninja-like figures existed as far back as the eras of Emperor Jimmu or Prince Shōtoku, credible records date their existence to the 14th century, during the Nanboku-chō period . The two most famous ninja regions are Iga (in present-day Mie Prefecture) and Kōga (in Shiga Prefecture), both near Kyoto and surrounded by mountains. These remote locations were ideal for developing unique survival skills and milit...