Hyung-jun dies in the beginning, leaving Si-on alone. But he starts to linger around her once she wakes up from a 6-year coma from an accident they were in together.
He will not have many lines in order to create a chilly mood since he is a spirit. “He doesn’t have that many lines to say other than the things he says with his heart from time to time. So he needs to express a lot with his eyes and Kim is an actor who holds many stories in his eyes
so I chased him to bring him into the show,” Producer Cho said of Kim and his role. He then added, “He needs to delivers his character through things other than words and Kim is advantageous when it comes to that.” There is much potential to the role serving as a new starting point to Kim who still seems much like a model, and he will also be in charge of creating the tension in the drama.