Frost Will Always Fall

Unha is the granddaughter of a shaman, and she's next in line to become one herself. It's a fate she never asked for, but she's always known that an evil force is out there waiting to destroy her if she rejects her destiny. However, all hope is not lost, as her grandmother spoke vaguely of a person who holds the key to her survival. So when the handsome character she's only ever met in her dreams appears before her as a man named Jueon, she's almost certain he's the key. Still, Unha's fate only becomes more complicated with her old school friend Haesu reentering her life. If she and Jueon are fated, then why is her connection to Haesu so strong? Is it possible they're all connected, not just in this life, but in the past as well?