Who is Kim Yo Jong? Korea scholars believe she was born in 1987 or 1988, making, and that she is close to her brother, Kim Jong Un. In April, the younger Kim was the only woman among six delegates at April’s historic talks between North and South Korea at the demilitarized zone (DMZ) that separates the two countries. It was Kim, as the first member of the North’s ruling dynasty to visit the South since the Korean War ended in an armistice in 1953, who delivered a message to the South for a desired detente at the Olympics. Read Kim Yo Jong Biography and Profile.