Tsuni was born February 1905 in Suita, Osaka, Japan to Shigeru Yonogi (1876-1940) and Miyoko Yonogi (1882-1950) and died 25 February2015 Suita, Osaka, Japan of unspecified causes. He married Sachi Otaro (1906-2001) 9 April 1931 in A, Osaka, Japan, Japan.