Do you know the reason why k-dramas are hit worldwide nowadays? It's because they convey emotions in each episode. At first, I sympathize with Woong's character and I hate how non-chalant Yeon Su's character. But as you go along each episode you will understand each character's story. The narrative is so beautifully made, the color grading and cinematography are extraordinary. The character development is compelling. You will notice how they become mature in their relationship. The title of each episode is clever! Love the concept!