Kanken Toyama developed seven Kyoku katas for his style called Shudokan. This series progresses from very basic to very complex. The first few kata are taught only when a karateka has reached the brown belt level, the remainder are taught as the karateka advances through the dan ranks. These kata show Toyama's amalgamation of the Japanese, Okinawan, and Chinese styles he had learned in his time. The first two videos seem passable, however as they progress I am seeing movements being abridged, substituted, or omitted. These forms contain the fighting techniques of Toyama's style which include stances and strikes not in other styles of Karate. One would not be able to learn these katas properly without an instructor in the style.