The "Ryu Ha" of the Amatsu Tatara arts represent the traditional techniques from ancient family schools that developed over centuries. Based on different sections of the numerous Dragon & Tiger scrolls, each historical lineage or "ryu" has a particular teaching focus or "ha". These differences stem from a myriad of contributing factors ranging from the occupation and background of the ryu ha's founder to the geographical region in which the ryu ha was developed.
Over 2000 years, only the strongest and most effective schools survived to this day. Understanding this, it is easy to appreciate the significance of an unbroken line lasting 58 generations. Even our younger ryu ha started more than 500 years ago, but many progressive teaching refinements have constantly been made. The original kata have always been and will always be the same. The "refinements" in how the art is taught must adapt with the times.