In 1976, ASAI Sensei returned to Japan, after eight years of absence, to participate in the first official congress of the International Aikido Federation in Tokyo.
On August 12, 1985, the Düsseldorf dojo was transferred to rue Augusta. Master ASAI’s Aikikai from Germany brings together more and more practitioners and now has 6000 members.
In 1985, the 20th anniversary of the German group was celebrated in Düsseldorf. ASAI Senseï invites for this event an assembly of the greatest Aikido masters including Doshu. His friend, Masamichi NORO presents there for the first time his personal creation: the Kinomichi.
Following disagreements with Master ASAI and the Aikikai Hombu Dojo, several close student teachers, including Gerhard WALTER, left him in 1987 to found the Federal Association of Aikido Teachers (BDAL) .
ASAI Shihan performs Aikido demonstration at 3rd World Games held in Karksruhe in July 1989.
In May 1992, Katsuaki ASAI took part in the 1st meeting organized by the European Aikido Federation in Brussels. For this historic international seminar, masters N. TAMURA , S. SUGANO , M. FUJITA , Y. FUJIMOTO , H. HOSAKAWA , H. IKEDA , M. KANETSUKA, C. TISSIER and Doshu Moriteru UESHIBA lead the practice for several days .
In 1995 it has been done the commemoration of the 30th anniversary of Aikido in Germany. In parallel with the many demonstrations of Japanese shihans, among which H. TADA , M. NORO , Y. KOBAYASHI, M. KANETSUKA, H. HOSOKAWA… It is also the one of the last public performances of Doshu, already severely weakened by illness.
In 1997, the latter awarded him the grade of 8th dan. Aged 55, ASAI Shihan becomes the youngest 8th dan in aikido in the world!