NINJA TRUTH Episode 11: Innin and Yonin - The Yin and Yang of the Ninja

The ninja had 2 modes of operation: Innin and Yonin. Innin covered assassinations, sabotage and other covert operations requiring stealth, while Yonin covered operations performed in the open that required cunning. We'll examine the 2 using reenactments, and also reconstruct a "saotokikigane" to determine the truth about this obscure listening device.