SEE ALSO: Kim Sae Ron spotted on film set, marking return to acting after 2 years

In the drama, Kim Sae Ron takes on the role of a dual-character, playing both Yeon Hee and Seo Ri. She said, "Because Yeon Hee and Seo Ri are two different characters, I was really worried; I hope that the viewers will look favorably upon [my acting]. Rather than being worried about playing a role with dual characters, I was more concerned about the process of going from Yeon Hee to Seo Ri. It was really difficult at first. [In the drama], I have to go back after undoing the curse on my brother and father. I think it was hard to approach Seo Ri who endured everything on her own." 

Kim Sae Ron also talked about her co-star Yoon Si Yoon who is 14 years her senior, saying, "He looks really young and lives his lifestyle like a young person so I didn't feel the age gap between us at all. He really made me feel comfortable on set." 

You can catch the chemistry between Kim Sae Ron and Yoon Si Yoon when 'Witch Exemplar' airs this coming May 13 at 8:30 PM (KST).