The upcoming romantic drama of the JTBC network titled "Run On" has unveiled an adorable sneak peek of Im Siwan and Shin Se Kyung in their poster shoot!

"Run On" will feature the love story of Ki Sun Kyum and Oh Mi Joo. Ki Sun Kyum, starred by Im Si Wan, was once a famous track and field athlete who quit the sport after a life-changing event. He then becomes a sports agent. Meanwhile, Shin Se Kyung plays Oh Mi Joo, an outgoing subtitle translator for movies. Both characters will cross paths and realize that they may be destined for each other.

Girls' Generation's Sooyoung, on the other hand, stars as Seo Dan Ah, the CEO of a sports agency. She is a chaebol heiress of Seomyung Group, but because of her gender, she's stripped from the position of being the potential successor of the company. However, she is strong-willed so she fights to take back what originally belonged to her. She will then meet Lee Young-Hwa portrayed by Kang Tae Oh, a university student who is thoughtful and kind-hearted.

In the just-released behind-the-scenes video, the four main characters of the show could be seen shooting for their individual posters before pairing up for the couple shots. Firstly, Im Siwan and Shin Se Kyung look adorable together as they giggle nervously, while making romantic gestures for the photo. In one scene, Im Siwan cutely imitates Shin Se Kyung as she awkwardly removes her arm from him after their sweet and affectionate shot. As the shoot continued, the couple was required to pose in sweet and romantic scenes and they ended up doing it naturally. One staff has even cut in to tell them, "This is before you guys start dating."

Then after a few captures, a staff member stops them again to inform them that they really look like a real-life couple and the actor cutely replies, "But we are already dating." The idol-actor then sweetly stroke Shin Se Kyung's face taking some hair off her face. Then he paused and turned to the staff to ask whether he's giving too much affection. The staff excitedly tells him to keep on doing the sweet gesture but Im Siwan felt worried asking, "Isn't this too awkward?" Shin Se Kyung humorously added, "I thought you said we were dating!"

When they're done with their shoot, the on-screen couple checks out their photos and Im Si Wan announced that he likes one particular photo, he states "I really like this photo. This gets my seal of approval!" Their co-stars Soo-young and Kang Tae Oh, are up next to have their photoshoot, and they too can't stop giggling as they start posing for their couple shots.

It was a fun photoshoot, and the cast's undeniable chemistry makes the fans even more excited for the show's release. "Run On" is set to premiere on December 16 at 9 p.m. KST.

Get a glimpse of the sneak peek video below!

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Written By: Sam Yap