Mount Jiri will be Jun Ji Hyun’s first comeback in the small screen in 4 years since "Legend of the Blue Sea" whereas this will be Ju Ji Hoon another drama after "Hyena".
Jun Ji hyun was previously confirmed as the female lead and now Ju Ji Hoon is confirmed to be her co-actor. The rest of the cast is yet to be confirmed. The male lead role was also offered to Park Seo Joon but he denied due to his busy schedule.
Mount Jiri is expected to be filming in the other half of 2020 or in early 2021 and will broadcast maybe in mid of 2021 .
"Ju Ji Hoon role would be as Kang Hyeon Jo who is a rookie national park ranger who's hiding a secret from his nation . He used to be a lieutenant in the military and lost his successor during training on Mount Jiri . Meanwhile , Jun Ji Hyun would be as Seo Yi Kang who eventually become "the only person he can disclose his secrets with" ."