Karate: The History and Practice of the Art/Kūsankū
Kūsankū, also known as Kankū-dai, is a foundation kata for many styles of karate. In Shotokan karate, the kata consists of 65 movements. A prevailing myth is that the kata represents attack and defense against eight adversaries. It does nothing of the sort. Like all kata it is a training drill comprised of multiple individual bunkai. Where the performer's position changes, for example, in moves two and three where knife-hand strikes are delivered to the left and then right side, this is to enable the technique to be practiced with both hands; it is not about striking two simultaneous attacks from the left and right!