Sadao Yoshioka, the Chief Instructor of the Hawaii Aiki Kai, began his training in 1955 under Yukiso Yamamoto. In 1959 He was assigned as an assistant instructor to Mr. Yamamoto at the Nuuanu YMCA in Honolulu. He became the Head Instructor of Aikido classes at the Nuuanu YMCA in 1960.
With the approval of the Hawaii Aiki Kai, the Honolulu Aiki Dojo sent him to Japan in 1967 for further training at Hombu Dojo in Tokyo. He was able to spend six weeks there. While in Japan, he lived with Akira Tohei, to whom he is deeply indebted. It was through Mr. Tohei's support, tutelage, and encouragement that he was able to learn the intricacies of Japanese etiquette and philosophy. Mr. Yoshioka had the honor of being personally invited to spend a day at the Iwama home of the late Aikido Founder Morihei Ueshiba. He was also the Hawaii delegate at the groundbreaking ceremonies for the new Hombu Dojo building.
Along with his Aikido training, Mr. Yoshioka, through Akira Tohei's recommendation and sponsorship, successfully completed the very rigorous Misogi training at the Ichiku-kai Dojo. He was not only the oldest member of the class, but also the first foreigner to graduate from this school.
Upon the retirement of Yukiso Yamamoto in 1970, Mr. Yoshioka was appointed by the Hawaii Aiki Kai as its next Chief Instructor. This appointment was approved by the Aikido World Headquarters in Tokyo.
Ever since the inception of Aikido in Hawaii, Mr. Yoshioka has repeatedly shown his dedication and commitment to furthering Aikido as taught by the Founder. From one dojo in 1953, the Hawaii Aiki Kai -- the governing body of Aikido dojos for all Hawaii -- has grown to 15 dojos.
Mr. Yoshioka is also the Head Instructor of the Honolulu Aiki Dojo, which serves as the headquarters of the Hawaii Aiki Kai.
Highly respected by his peers and his students, he has been appointed a member of the Superior Council of the International Aikido Federation.
He has a 6th Degree Black Belt ranking.