甲府市
Masumura was born in Kōfu, Yamanashi. After dropping out of a law course at the University of Tokyo he worked as an assistant director at the Daiei Film studio, later returning to university to study philosophy; he graduated in 1949. He then won a scholarship allowing him to study film in Italy at the Centro Sperimentale di Cinematografia under Michelangelo Antonioni, Federico Fellini and Luchino Visconti.