What is a Ninja Tetsubishi?

A Ninja Tetsubishi, also known as a "ninja star" or "caltrop," is a traditional Japanese weapon used by ninjas for both offense and defense. It consists of a small, sharp object with multiple points that can cause injury or impede pursuers when scattered on the ground. The design allows it to rest on one point, ensuring that at least one sharp end remains upright. Tetsubishi were often used for stealth and escape tactics during combat or evasion.