🇰🇵 Kim Jong Un has likely made a final decision to name his daughter as his successor Two years ago, South Korea's National Intelligence Service (NIS) said Kim Jong Un appeared to be grooming his then 13-year-old daughter, Kim Ju Ae, as his successor. Now, the NIS reports that he has moved from preparation to formally designating her as such. Ju Ae is the only officially known child of Kim Jong Un and his wife, Ri Sol Ju.