Shurikens are traditional Japanese concealed star-shaped weapons, often associated with ninja and samurai culture. They are typically made of metal and designed to be thrown at targets. Shurikens come in various shapes and sizes, with the most common being the four-pointed star, known as a shuriken or "shuriken" in Japanese. These weapons were primarily used for distraction or to injure opponents rather than for direct combat. Shurikens are often depicted in popular media, contributing to their mystique and association with stealthy martial arts. Today, they are mainly used in martial arts training and as collectibles.