Tatsuya Nakadai
Tatsuya Nakadai, who had previously appeared in Kobayashi's "The Thick-Walled Room" and "Black River", was specifically chosen by the director to play the protagonist Kaji. Much of the supporting cast were veteran film and stage actors who had previously worked with Kobayashi on other projects, or who would later become regulars with the director. The film marked Nakadai's first leading role, and he later recalled his performance as being exceptionally challenging. Certain fight scenes called for actual contact, leading to the actor's face becoming swollen. The final sequence additionally involved Nakadai lying face-down in a field, the cameras not stopping until he was completely covered in a mound of snow.