JKF Renbukai organization established the All Japan Karatedo Federation (JKF) and made Shūdōkan its overall headquarters. The JKF appointed Choko Sai as chairman, Yasuhiro Konishi (Shindo Jinen-ryu) and Hiroshi Kinjo (Kanbukan) as vice-chairmen, Kanken Toyama and Hiroyasu Tamae (Otou-ryu) as Shihan, and Hironori Otsuka (Wado-ryu), Tatsuo Yamada (Nippon Kenpo Karate), Shinkin Gima (Shotokan-ryu), Isamu Tamotsu (Shorinji-ryu) and Tsuyoshi Chitose (Chito-ryu) as officers of JKF. In 1964, JKF made a new united league of the non-contact karate world with JKA (Shotokan), Wado-ryu , Goju-ryu and Shito-ryu. Old JKF handed over the name of JKF (Japan Karate Federation) to the new league and changed
Ryu Si-won held his 100th solo concert in Japan as part of his 16 concert tour in eight cities, including Yokohama, Nigata, Osaka, Sendai, Nagoya, and Fukuoka; with the final concert on 21 December at Saitama Super Arena. On 21 December 2011, Ryu was signed on by Japanese travel agency H.I.S, for one-year to promotion Korean tourism in Japan. Where he was featured in two 15-second commercials in the themes of "Let’s go to Korea" and "You are the character of your drama" for Japanese television in January 2012. In May 2012, Ryu starred in Channel A's drama "Goodbye Dear Wife" along