After returning from the United States, he visited various countries around the world to help coach instructors abroad and promote the Goju-ryu style. In 1967, at the age of twenty nine (29) he won the tournament of free-style individual match at the first all schools of Karate-Do championships. On the 19th April 2003, Master Yamamoto opened the Kanda Renseikan School in Sotokanda, Chiyoda ward, Tokyo that also acts as the administrative school of the IKO. To visit the International Karate-Do Organisation Japan, please select the following link:
Today, Master Yamamoto devotes his time to coaching high-ranked black belt holders in Japan as well as instructors abroad from Taiwan (The Republic of China), Singapore, Australia, The United States, Portugal, Italy and Iran.