What's the target age group for this drama? Is it 13 to 18? The plot, actions, and dialogues of the characters are so childish and illogical that it's hard to believe it wasn't meant for that age range. Given a story about a centuries-old demon and a young, successful CEO caught up in a murder plot while the dealing with diminishing power, you'd expect a thrilling, suspenseful tale with lots of unexpected twists. Instead, we get clingy dialogues, endless flashbacks/slow motions, and main characters who are always outsmarted by not-so-clever villains.

The leads are undeniably stunning and have great on-screen chemistry. However, Kim You Jung seems too young for this role. She lacks the depth to convincingly play a successful CEO and comes off as a kid playing dress-up. As for Song Kang, it's a shame his role allowed him to be a wicked demon for only one episode; the rest of the time, he's just love-sick. The supporting cast didn't stand out either.

Ultimately, this drama doesn't quite deliver the depth and excitement you'd hope for from such a promising premise. Even though it starts with an intriguing plot and visually appealing leads, the execution misses the mark, leaving viewers feeling like something's missing. The show struggles to balance its supernatural elements with a coherent, mature narrative, making it a missed opportunity. If you're looking for a gripping and well-structured story, this drama might not meet your expectations. It’s a reminder that good looks and star power aren't enough to carry a story that lacks substance and depth.