Hitonari Tsuji (辻 仁成 , Tsuji Hitonari , born October 4, 1959) is a Tokyo-born Japanese writer, composer, and film director.
 In his film and singing work he uses the name Jinsei Tsuji, an alternative reading of the Japanese writing of his name.
 He debuted as a writer in 1989.
 His books and stories have been bestsellers in Japan as well as overseas, with his work being translated into 20 languages and selling over ten million copies.
Tetsu Yano (Japanese 矢野徹 "Yano Tetsu"; October 5, 1923 – October 13, 2004) was a Japanese science fiction translator and writer.
 He began to introduce to Japanese readers the works of US science fiction writers in the late 1940s.
 He was the first Japanese writer of the genre to visit the United States, in 1953.
 He took part in founding Science Fiction and Fantasy Writers of Japan (SFWJ, 日本SF作家クラブ) in 1963, and served as its president from 1978 to 1979.
Frank Russell Capra (born Francesco Rosario Capra; May 18, 1897September 3, 1991) was an Italian-American film director, producer and writer who became the creative force behind some of the major award-winning films of the 1930s and 1940s.
 Born in Italy and raised in Los Angeles from the age of five, his rags-to-riches story has led film historians such as Ian Freer to consider him the "American dream personified."
The Sound of the Mountain (Yama no Oto) is a novel by Japanese writer Yasunari Kawabata, serialized between 1949 and 1954.
 "The Sound of the Mountain" is unusually long for a Kawabata novel, running to 276 pages in its English translation.
 Like much of his work, it is written in short, spare prose akin to poetry, which its English-language translator Edward Seidensticker likened to a haiku in the introduction to his translation of Kawabata's best-known novel, "Snow Country".
Frank Warner Capra (March 20, 1934 – December 19, 2007), known as Frank Capra Jr., was an American film and television producer.
 He was one of the three children of film director Frank Capra and his second wife, Lucille.
 His own sons, Frank Capra III and Jonathan Capra, are assistant directors.
Utako Yamada (山田詩子 , Yamada utako ) is a Japanese writer, illustrator and translator from Tokyo, Japan.
 She is the author of 3 official children's books, on which the most notable were The Story of Cherry the Pig and Buzzy the Honeybee.
 She also owns a tea shop named Karel Capek located in Kokubunji, Tokyo.
 She is married in Tokyo with her husband and two sons.
Atsuo Inoue (井上 篤夫/いのうえあつお , born July 15, 1947) is a Japanese writer and translator.
 He is regarded as an expert on cinema and works of Frank Capra.
 and the author of Aiming High—A Biography of Masayoshi Son.
Kentarō Katsuya (勝矢剣太郎 , Katsuya Kentarō ) was a Japanese writer, translator, and stageplay script writer.
Machi Tawara (俵 万智 , Tawara Machi , born December 31, 1962) is a contemporary Japanese writer, translator and poet.
Komimasa Tanaka (田中 小実昌 , Tanaka Komimasa , April 29, 1925–February 27, 2000) was a noted Japanese writer, essayist, and translator.

Question: Who was the Japanese writer and translator for the film director Russell Capra?
Answer: He is regarded as an expert on cinema and works of Frank Capra.