There is some seriously excellent casting in this drama. I can't imagine anyone else playing their roles. The actors own them.
My favourite character has to be the Scheduler! He supplies the comic relief and I love his snappy banter with Shin Ji-hyun at the beginning. He has a seriously amazing wardrobe! The answerphone messages are great indicators of his mood. I feel sorry for Seo Ji-hye who plays Shin In-jung, she has been stiffed with another role where she's unlucky in love...again! Think...CLOY! The soundtrack is memorable and fits exactly. At the beginning I was watching and thinking, this is tight there are no inconsistencies, which is strange for a supernatural kdrama but keep watching and you'll find them later on. The makers struck a good balance between humour & tragedy...at the beginning that is. Around episode 13 I was thinking... hmmm what more do they have left to say to fill another 7 episodes and it just dragged, unfortunately. It would have been much better to end it at 16 episodes, and for a happy ending but I think that would miss the point of the story which is how do you carry on living after you lose love. I'm sure more people lose love than keep love and it's important to show it can be done. I like how Song Yi-kyung is portrayed as depressed and still can't get over it after 5 years, this is what actually happens to a person if you don't have family support. I can't believe the end where they turn out to be sisters! For some reason I kept thinking her brother was really Kang Min-ho! So, no this sisters story line ticked me off...it was a little too convenient! I liked how the supernatural was portrayed in a realistic way, and applaud the makers for tackling a tricky subject, but I would hesitate to rewatch as it's kind of heavy in parts.