Yasuo Fukuda
Fukuda was born in Takasaki, Gunma, the eldest son of politician (later the 67th Prime Minister) Takeo Fukuda. He grew up in Setagaya, Tokyo, attending Azabu High School and graduating from Waseda University in 1959 with a degree in economics. After university, he joined Maruzen Petroleum (now part of the Cosmo Oil Company). He was only minimally involved in politics over the next seventeen years, working his way up to section chief as a typical Japanese "salaryman". He was posted to the United States from 1962-64. While his father Takeo Fukuda was prime minister from 1976–78, Yasuo became a political secretary. From 1978 to 1989, he was a director of the Kinzai Institute for Financial Affairs, serving as a trustee from 1986 onward.
Kakuei Tanaka
Fukuda and Tanaka soon became the two battling heir apparents of Satō's faction, and their rivalry was dubbed by the Japanese press as the "Kaku-Fuku War." Despite the scandal, Tanaka made a record showing in the 1967 general election, and Satō re-appointed him as secretary general, moving Fukuda to the post of finance minister. In 1971, Satō gave Tanaka another important stepping stone to taking over the government: minister of international trade and industry (MITI).