Professor Okazaki studied seifukujitsu with his Sensei in Hilo, Hawaii and toured Japan learning from those that he found practicing the art there. His clinic, known as the Nikko Seifukujitsu do in (sanitarium) treated thousands of patients seeking help with enumerable ailments. Okazaki also studied the local healing arts while in Hawaii.
Seifukujitsu therapies are based on the idea that the body is a perfect healing system that sometimes needs a little help to "get into gear." It is mainly a system of physical manipulation that begins with an overall rebalancing of the body's energy pathways. This is achieved using a full body massage system known as the "Okazaki long life kata."
For a detailed history of Seifukujitsu go here.
For a detailed history of Prof. Okazaki go here.