SHUWAKAI is an affiliate of Foundation Aikikai (AIKIKAI). On February 1, 2006 SHUWAKAI was founded by Shuji Kitamura, as a successor to Tokyo Aikido Shinbukan (TOKYO SHINBUKAN).

The late Iwagaki was a grand master (SHIHAN) in Aikikai Honbu Dojyo (HONBU) and thereafter the head of Aikido Shinbukan (AIKIDO SHINBUKAN) since 1976. The Tokyo Branch of AIKIDO SHINBUKAN was established in November 2002 and he passed away in November 2004 and TOKYO SHINBUKAN was established in December 2005 on the occasion of the first death anniversary of Iwagaki SHIHAN.