Actors Ji Sung shared his thoughts on friendship. In the afternoon of June 25, 2014, the press release of the movie "Good Friends" took place in the CGV Wang Ship Ri in Seoul, Korea. Director Lee Do Yoon and actors Lee Kwang Soo, Ji Sung and Joo Ji Hoon made their appearances. Actor Ji Sung said in the interview, "I think friendship is built on trust. There is no room for doubt in friendship." The movie "Good Friends" is an action movie that tells the story of the three men in the middle of friendship and doubts. Actors Ji Sung, Joo Ji Hoon, and Lee Kwang Soo are to make their appearances. The movie "Good Friends" premieres on July 10. The three actors in "Good Friends," Lee Kwang Soo, Ji Sung and Joo Ji Hoon, are going to spend time with Running Man members in the upcoming episode of the SBS entertainment program "I like Sundays - Running Man," and play their parts with the Running Man members.