This show was the perfect mix between light hearted comedy and heart breaking tragedy. I loved the reversal of the normal gender dynamic in kdrama (the 1,000 year old supernatural being the woman and the ordinary human who needs saving being the man) and both the past and present storylines were interesting. Both Yeo Jingoo and IU were brilliant in their roles and bounced off each other really well. Although for some reason I just couldn't connect with the side couple, they were the least interesting part of the show for some reason.