Kaicho Tadashi Nakamura is a ninth Dan (degree) black belt with fifty years of experience in practicing and teaching in the martial arts. Kaicho was born on 22 February 1942, and began his karate training at age eleven. His first experiences were in the Goju style under the instruction of Kei Miyagi Sensei, the son of the founder of the style. In 1956, Kaicho began studying with Masutatsu Oyama, the founder of Kyokushin Karate, and in 1959, he earned his shodan rank. At the time, he was the youngest Kyokushin student in Japan to receive a black belt.

In 1961, at age nineteen, Kaicho Nakamura debuted on the tournament scene with a first place in the All-Japan Student Open Karate Championship. The following year, he became a Japanese national hero by knocking out a Thai kickboxing champion in a match to determine which nation had the superior martial art. Around this time, Nakamura also began teaching karate to others. He served as the chief instructor at Camp Zama, a U.S. military base near Tokyo, from 1961 to 1965 and coached the Toho Medical University karate team for 3 years. Nakamura also served as the chief instructor at the Kyokushin Karate Honbu in Tokyo. In 1966, Nakamura was personally selected by Masutatsu Oyama to bring Kyokushin karate to America. He moved to New York City and began teaching Kyokushin Karate at a small dojo in Brooklyn. In 1971, Kaicho established the North American Kyokushin Karate headquarters. He served as the American head of Kyokushin Karate for a decade and trained and developed many skilled students in that period. In 1976, Nakamura respectfully withdrew from Kyokushin Karate. The same year, he established the World Seido Karate Organization.

Today, Seido Karate is an international organization with thriving branches in fourteen countries and has more than 20,000 students worldwide. Seido’s New York Honbu is one of the largest martial arts schools in the world and has approximately fifty black belts training on an average day. There are branches in Asia, Europe, South America, Australia, South Africa, New Zealand, Jamaica, Israel, California, Florida, Washington, Maryland, Texas, Pennsylvania, Chicago, Vermont, and New Jersey. More importantly, Seido represents the personal ideal of Kaicho Nakamura that karate can help individuals to better understand themselves and others. Seido Karate programs around the world continue Nakamura’s vision and help to develop individuals who make significant contributions to their communities and to society at large. While performing many duties as the chairman of the World Seido Karate Organization and the Seido Juku Benefit Foundation, Kaicho Nakamura is first and foremost an instructor of karate. He teaches classes at Seido Karate’s Honbu (headquarters) every day and also frequently conducts seminars and gives lectures. He remains committed to assisting others to reach their full human potential, as both karateka and individuals.