Both a lethal weapon and a work of breathtaking art: The Japanese sword is an iconic cultural symbol. Even when used in battle, the katana was always regarded as a sacred treasure that embodied the samurai spirit. Swordsmith Kawasaki Akihira has inherited a thousand-year-old tradition: He welds, hammers and folds plates of steel again and again to create each unique blade. Explore the spirit of the swordsmith who forges beauty from steel.