"Red Beard" also marked the midway point, chronologically, in the artist's career. During his previous twenty-nine years in the film industry (which includes his five years as assistant director), he had directed twenty-three films, while during the remaining twenty-eight years, for many and complex reasons, he would complete only seven more. Also, for reasons never adequately explained, "Red Beard" would be his final film starring Toshiro Mifune. Yu Fujiki, an actor who worked on "The Lower Depths", observed, regarding the closeness of the two men on the set, "Mr. Kurosawa's heart was in Mr. Mifune's body." Donald Richie has described the rapport between them as a unique "symbiosis".