Kang Gary's departure from "Running Man" has sparked rumors that "Descendants of the Sun" actor Song Joong Ki, who was originally associated with the variety show way back in 2010, will replace him.

Kang Gary decided to leave the show to focus on his music, as reported by AllKpop. He was reportedly finding it difficult to concentrate on both genre, so he decided to give up the variety show.

"Gary expressed his desire to focus on his music studies and revealed that he wants to invest more time in music," the producers of the show said. "The 'Running Man' producers decided to respect Gary's decision to pursue his main field as a musician. We sincerely appreciate Gary who has given great effort for 'Running Man' as the original member for the past 7 years."

In addition, his co-star, Song Ji Hyo released a statement about the departure of her partner in "Monday Couple."

"This is something I have absolutely no say in, but, when a colleague decides on his career path, I'll root for him," Song Ji Hyo said at the press conference for "My Wife's Having an Affair This Week today." "I'm sad because we've been together for seven years, but I'll always be his colleague, rooting for him. Please keep Monday Couple as a piece of memory."

On October 28, Gary posted a message on his Instagram account to thank fans for seven years of love through the variety show.

 Hello everyone this is Gary, First of all, I regret to say that I am truly sorry to announce the sudden news. I am sincerely grateful and thankful for all the attention and love I have received throughout the 7 years. I deeply apologize with all my heart, and I promise I will do my best wherever and whatever I pursue in the future especially for all my fans that have given me these memorable moments that I will never forget. I also want to thank those who have supported me with my decision. Again, I am sorry and again, thank you! Lastly, please continue to support 'Running man' and the cast for all the hard work and effort they put in each week to make the best of 'Running man' Thank you! With much love, Kang Gary

A photo posted by Sommer (@kang_gary8888) on Oct 27, 2016 at 9:26pm PDT

After his last recording of the show, he posted a family picture onto his Instagram on October 31 with the sweet message:"Thank you, 'Running Man.' I've been happy. You were the best moment of my life and I will not be able to forget you."

#런닝맨#감사합니다#행복했습니다 내인생 최고의 순간이었고 잊지못할겁니다♥️ A photo posted by Sommer (@kang_gary8888) on Oct 31, 2016 at 4:30am PDT

According to a report, it will be the first time that "Running Man" will change its cast after Song Joong Ki leave the show in 2011. However, there were no official statement whether the "Descendants of the Sun" actor will come back on the hit variety show.