WebSpouse. Masami Ohno. Children. 2. Masayoshi Son ( Japanese: 孫 正義, romanized : Son Masayoshi, Korean: 손정의, romanized : Son Jeong-ui; born 11 August 1957) is a Japanese billionaire technology entrepreneur, investor and philanthropist. A third-generation Zainichi Korean, he naturalized as a Japanese citizen in 1990. [2]