Heiress Dilemma.

An emotionally numb heiress runs her life on a schedule, but two forces keep testing her control.
By day she had come to terms of managing boardrooms and headaches, reluctantly conceding to Dr. Jenkins' treatment before the next crisis.
By night she fends off the parade of polished suitors her mother insists are "perfect matches," none of whom see past her title.

And in the shadows waits the Underlord - a name whispered with fear, now circling closer to her world by her own invitation. Between therapy, family pressure, and a feeling she can't out-schedule, Yoona is learning that some battles aren't won with a calendar.