Yasuji Murata, Hakuzan Kimura, Sanae Yamamoto and Noburō Ōfuji were students of Kitayama Seitaro and worked at his film studio. Kenzō Masaoka, another important animator, worked at a smaller animation studio. Many early animated Japanese films were lost after the 1923 Tokyo earthquake, including destroying most of the Kitayama studio, with artists trying to incorporate traditional motifs and stories into a new form.