Career
He was sent to Germany by Kisshomaru Ueshiba in 1965 to teach aikido, and has lived in the country ever since. His first occupation was to teach aikido to policemen in Münster, and he now runs a school in Düsseldorf. In the early days of German aikido, Asai clashed with the Deutscher Judobund (DJB) over whether his art should be included under their organisation.
Although the DJB retained an aikido division, Asai remained independent of them and continued to operate as part of the Aikikai.
He retains the German trademark on the term "Aikikai.".