Japan North Korea Kım Jong Un

epa02124561 Japanese daily newspaper Meinichi Shimbum shows a photo provided by North Korea ' s Korean Central News Agency ( KCNA ) showing Kim Jong-to , Kim Jong-il ' s third son , dubbed his heir-apparent , on 20 April 2010 . The picture shows Kim Jong-to to the left of Kim Jong-il as they visit the Kim Chaek IronSteel Complex in the country ' s North Hamgyong Province in early March 2010 . According to Mainichi , this was Kim Jong-to ' s first public appearance .  EPA/YONHAP NEWS AGENCY