Born to a Japanese father (a philosopher and naval officer) and a Polish-German mother (Cornelia), Takehiko Kanagoki later married the daughter of Viscount Iwakura Tomomi. He started his playing career with the Rangers team as their captain while attending Musashi High School in Tokyo. Kanagoki studied at the Faculty of Economics of the Tokyo Imperial University and represented Japan at the 1936 Berlin Olympics. After graduation he worked for the Nissan Motor Co. After World War II, he founded a company trading pottery. Kanagoki also served as director of the Japan Basketball Association and was a member of one of the first sports delegations from Japan to visit visiting the People’s Republic of China in 1957.