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Kanshū Sunadomari is a Japanese aikido teacher who was an uchideshi to the founder of aikido, Morihei Ueshiba. He founded the aikido style Manseikan Aikidō. He was born in Kagoshima Prefecture, Japan and in his teens became an uchideshi of Morihei Ueshiba, the founder of aikido. His live-in apprenticeship under the founder took place during World War II, and he also spent a brief period at the Aikikai Hombu Dojo after the war. On October 23, 1953 he gave the first public demonstration of aikido in Kyūshū. The following January he opened up the Manseikan dojo on the premises of the Tetori Shrine in the heart of Kumamoto City. His aikido spread throughout Kyūshū to cities such as Fukuoka, Kagoshima, Nagasaki, and Miyazaki. During this time, the number of practitioners rose to over 20,000 with over 3,000 people reaching the level of black belt. In 1961, at the age of 38, Sunadomari received the rank of 9th [dan]. Sunadomari comes from a family of devout believers in Omoto, the religion on which Ueshiba based the spiritual underpinnings of aikido. Kanemoto Sunadomari published the first biography of the Founder in 1969 entitled Aikido Kaiso Morihei Ueshiba. Fukiko Sunadomari (elder sister of Kanshu) was a close personal confidante of the founder until his death and was also a high ranking practitioner of aikido. After Ueshiba's death in 1969, Sunadomari founded his own independent style in Kumamoto City and began his further study of the spirit of aikido. Sunadomari is known for his emphasis on kokyu ryoku (breath power) and his extremely soft and powerful technique. He is widely acclaimed for his dynamic performance in the First Friendship Demonstration which was held in Tokyo in 1985 and became one of the most famous modern aikido demonstrations captured on film.