f(x) Krystal stars as Lee Bo Na, the heiress of Mega Entertainment in the elite school drama "The Heirs".

On October 14, SBS's "Good Morning" revealed interviews from the drama's press conference. The idol-actress talks about her experience filming in the drama and she said, "I feel the pressure of doing well since it is my first serious drama. Because of that, I had a lot of worries about how I would do."

She also talked about the support she gets from her members. "My members always cheer me on and they even sent me messages to congratulate me. For the press conference, they wished me good luck numerous times that day, and I'm thankful."

In a video message she sent for her group members after the interview, Krystal said while looking at the camera, "To my members, be sure to watch me!"

It was previously revealed that the representatives for the drama considered casting Krystal after seeing her performance in her past sitcoms. She was casted in the MBC sitcoms "More Charming by the Day" and "High Kick: Revenge of the Short Legged", where both characters were named Soo Jung, the idol's birth name.

According to them, Krystal has the energy and brightness to her that would make her portray a high school character well.

"The Heirs" airs every Wednesday and Thursday at 22.00 (KST).