Perhaps his most notable collaboration with Kurosawa was in Seven Samurai as the youngest of the samurai , Katsushiro .
The first was Stray Dog ( 1949 ) as Yusa the criminal .
Perhaps Yusa 's most notable collaboration with Kurosawa was in Seven Samurai as the youngest of the samurai , Katsushiro .
The first was Stray Dog ( 1949 ) as Yusa the criminal .