Watch: Shin Se Kyung And "Run On" Staff Surprise Im Siwan For His Birthday In Making-Of Video

Jan 15, 2021

Im Siwan celebrated his birthday on the set of “Run On”!

JTBC’s “Run On” is a series about people finding common ground in an age where communication is becoming more and more difficult. It features Im Siwan as Ki Sun Kyum, a former track and field athlete. His world is shaken up when Oh Mi Joo (Shin Se Kyung) enters the picture.

In a making-of video released from the filming of episode 9, the chemistry between the two lead actors shines through. In one scene, Oh Mi Joo is sick in bed and Ki Sun Kyum is right next to her nursing her back to health. After rehearsing the scene a couple times, the two actors film the sweet moment.

The next scene shows Oh Mi Joo and Ki Sun Kyum dining in the cafeteria. Everything flows seamlessly and effortlessly, from the run-through to the filming. The two use their actual lines to make playful jokes and take instructions from the director before wrapping up the scene.

Coming from contrasting backgrounds, Oh Mi Joo and Ki Sun Kyum often have trouble seeing eye to eye. In one scene, Ki Sun Kyum has trouble understanding why Oh Mi Joo might be upset. Behind the scenes, Shin Se Kyung and Im Siwan talk through this misunderstanding and explain the perspective of their own characters.

Im Siwan’s birthday happened to fall on the same day episode 9 of “Run On” was filmed. Shin Se Kyung, with the help of the staff, surprised the actor for his 33rd birthday with a birthday cake. After thanking everyone and blowing out his candles, Im Siwan comments, “I thought I was late because I saw all of you grouped together.”

Check out the entirety of the celebration plus behind-the-scenes footage here: