岸信介
Hashimoto was born on 29 July 1937, in Sōja in Okayama Prefecture. His father, Ryōgo Hashimoto, was a cabinet minister under Prime Minister Nobusuke Kishi. Following his father's lead, Ryutaro received his degree in political science from Keio University in 1960, and was elected to the House of Representatives of Japan in 1963.