O Sonfa

Originally from Jeju Island, South Korea, she left for Japan in 1983. She received a BA degree from Daito Bunka University and an MA degree from the Graduate School of North American Studies at Tokyo University of Foreign Studies. She went on to naturalise as a Japanese citizen.

In 1998, she lost her South Korean nationality as she had acquired Japanese nationality in 1991. In 2007 and 2013, she was refused entry to South Korea.

She has since been a source of controversy in Korea due to her open criticism of not only the South Korean government, but Korean culture as a whole. After the 2014 sinking of MV Sewol disaster, she described Koreans as "having no patriotism and completely selfish", and argued that Japan should not try to reconcile its differences with South Korea.

O denies that "comfort women", a euphemism for Korean women who are considered by international consensus to have been forced prostitutes during World War II, were forced to work at all.