This drama was recommended to me by my friend. She told me it was a great k-drama, and I think so too. The way the writers' wrote the story, from the places and how it would start was amazing. I really liked how it was kind of unique from other similar k-drama concepts. The characters was also well-written. The ambiance of the whole drama was kind of mysterious and it gives off a refreshing vibe. Most of k-drama that has a similar concept needed a romance/romantic gestures between the leads. However, this drama, even without those, still gave their all with the production and acting. They made this drama not boring and will keep you watching it as you slowly unravel the mystery behind certain phenomena that happened.