A native of Osaka, Yamasaki worked as a journalist for the Mainichi Shimbun from 1945 to 1959 after graduating from Kyoto Women's University in Japanese literature.
Un nativo de Osaka, Yamasaki trabajó como periodista para el "Mainichi Shimbun" 1945-1959 después de graduarse de la Kyoto Women's University en la literatura japonesa.