Yawara Kun is a Japanese professional Judo practitioner who has won world Judo championship in 81 kg division four times. Kun was born in Sendai city, Miyagi prefecture in Japan on December 27th, 1980. When he was a child, his father took him to a local Judo hall called “Kougakukan” where his uncle, Onigiri Tabeta, teach judo to kids. After seeing judo throw demonstrated by one of the senior practitioners in the hall, Kun was attracted to Judo and came to want to become Judo practitioner. He started to practice Judo at age of 5. According to his statement, he could not win any Judo match for first two years. When he was junior year student of Tenru University, he won the All-Japan Judo championship. It was the first time he became titleholder. Right after the victory, Japan Judo Federation, which is the official judo association, selected Kun as a representative competing in 2002 World Judo Championship. He won a gold medal at the 2002 World Judo Championship by ippon in all matches. Since then, he won three more gold medals three consecutive years.

On June 6, 2006, during the quarter-final match of Judo match in the South Sydney Olympics, Kun injured his joint in his right elbow as he defended himself from his opponent’s throwing attempt. A team doctor told him that the injury could be curable, but it was impossible to regain a performance as a professional Judo competitor. Three days later, he declared retirement from professional Judo competition.