On January 18, Krystal met with reporters at the SM Entertainment Communication Center for an interview after wrapping up her latest drama, 'Prison Playbook'. During the interview, Krystal's activities as a singer came up and she said, "I miss dancing. I feel I've gotten stiff because I haven't danced in so long. Because I love music so much, it's something I don't want to give up. If there is a good song, I would like to release it at any time."

She continued when the topic of f(x)'s long inactivity was brought up. She answered, "I'm really sorry to all the fans. Because I can see that they're having difficult times, I'm sorry and sorry again. It's frustrating because I'm unable to say anything." Krystal also expressed how difficult it's been for both her and the rest of the members, "Either the timing or the situations didn't line up well. We tried hard. There was a plan in which we would return on a specific month but it got canceled. It's not easy. We as a group are always disappointed and talk to one another about making a comeback quickly. We would like to release an album."

The last time f(x) released an album was back in October of 2015 with '4Walls'. Would you like to see f(x) make a comeback soon?

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