According to reports, rumors resurfaced claiming that Kim Jong-un was in a coma and power was about to pass to him.
But images of the dictator began to circulate showing him fit and healthy.
He chaired meetings last week and was pictured inspecting fields ravaged by the typhoon.
However, her sister has not been seen in public since July 27, fearing she would be executed by her own brother, who is known to get rid of his rivals.
North Korea expert Professor Nam Sung-wook of Korea University believes Kim Yo-jong’s growing profile could be his downfall.
He told Chosun Ilbo: “In the past, anyone was deprived of their position when they were described as the number two person in the North.
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Sung-Yoon Lee, a professor at Tufts University’s Fletcher School of Law and Diplomacy, said Kim Jong-un’s sister was groomed for power.
He told the New York Post: “The way for her to build her credibility and net worth, that is, the way for her to gain respect, is not to play nice but to be. a cruel dictator to his people and a credible nuclear threat. in the USA.
“She can prove to be more ferocious and more tyrannical than her brother, her father or her grandfather.”
However, his brother is known to have executed anyone he sees as a threat. He executed the highly esteemed civil servant and his father’s son-in-law, Jang Song-thaek.
Jang was reportedly described as the leader of North Korea’s de-factor when Kim’s father was dying.
However, he disappeared in 2013 and an official regime statement described him as “worse than a dog” who wanted to seize “supreme power by the most cunning and sinister means”.
Although it is not confirmed, it has been reported that Jang’s family suffered the same fate after the Supreme Leader started cracking down on his rivals.
In June, reports said Kim Yo-jong would have no chance of taking the reins as leader of North Korea, as the country perceived its takeover as an “insult” to democracy.
A source previously told the North Korean online newspaper Daily NK: “Kim Yo-jong basically has no chance of taking the reins as she is not seen as a ‘real’ successor to Kim Jong- a.
“If Kim Yo-jong gained power, it would be an insult to the people (in other words, the people would not accept her taking power).”