In 1926, he became a third assistant director at Shochiku. In 1927, he was involved in a fracas where he punched another employee for jumping a queue at the studio cafeteria, and when called to the studio director's office, used it as an opportunity to present a film script he had written. In September 1927, he was promoted to director in the "jidaigeki" (period film) department, and directed his first film, "Sword of Penitence", which has since been lost. "Sword of Penitence" was written by Ozu, with a screenplay by Kogo Noda, who would become his co-writer for the rest of his career. On September 25, he was called up for service in the military reserves until November, which meant that the film had to be partly finished by another director.