Kei Tani was born on February 22, 1932 in Tokyo, Japan as Yasuo Watanabe. He is known for his work on Zûzûshii yatsu (1964), Sarari man donto bushi - Kiraku na kagyô to kita monda (1962) and Zoku zûzûshii yatsu (1964). He died on September 11, 2010 in Mitaka, Tokyo.