Hiraki was born in Sakai on October 7, 1931. After graduating from Kwansei Gakuin University, he joined Yuasa Batteries in 1957. In 1958, he moved to Furukawa Electric. Furukawa Electric won 1960, 1961 and 1964 Emperor's Cup. In 1965, Furukawa Electric joined new league Japan Soccer League. He played 6 games in the league. He retired in 1966.