The martial art of “Iaido” (ee-eye-do) is an ancient Japanese martial art that uses katana swords in training. The swords aren’t sold at antique stores or even specialist knife stores, and they can’t be taken abroad without permission from the Japanese government. In present era, all Japanese swords, or Katanas, need to be registered and carried in scabbards with registration certificates attached.
When Samurai warriors existed in Japan, the swords they used were revered by the warriors and held the blades in a higher regard than their own lives.