ウェブNobuhiro Ishihara [ ja] (younger brother) Alma mater. Keio University. Website. 衆議院議員石原ひろたか. Hirotaka Ishihara (石原 宏高, Ishihara Hirotaka, born June 19, 1964) is a Japanese politician of the Liberal Democratic Party, a member of the House of Representatives in the Diet (national legislature).