About Isao Okano
Isao Okano (岡野 功, Okano Isao; born 20 January 1944) is a retired judoka who competed in the middleweight division (–80 kg) in the 1964 Summer Olympics. Okano entered the 1964 Summer Olympics while studying at Chuo University's law school, and won the gold medal in the middleweight division. Okano suddenly retired from competitive judo at only 25 years of age, and founded the Sekijuku (currently the Ryutsu Keizai University's judo team) in 1970, where he instructed future Olympic gold medalist Kazuhiro Ninomiya. He won another gold medal at the World Judo Championships in 1965, becoming the champion of his division at only 21 years of age.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.