The Ninjaken, also known as the Ninjato or Shinobigatana, are blades characterized by being straight, chiseled edged swords. They appear to be largely a media creation, based on the design of the Wakizashi, or perhaps the Chokutō. What sets a Ninjaken apart from more commonly recognized blades such as Katana are the shorter blade, straight edge, and square guard. This was said to be a more efficient and sensible weapon for the ninja, who relied heavily on stealth tactics.