My typical disclaimer: This is totally my opinion, so please don't come at me with hate.
I will admit to being a romance junkie. I love sweetness, cuteness, and happiness. I was so looking forward to the pairing of Song Kang and Kim You Jung. But, to me, this one seemed like it was all over the place, trying to find a place to land.

Story: Not original by any stretch of the imagination. I kept thinking that I'd seen certain things in other dramas and the one that stuck out the most was him burning up, a la Goblin. So, he became a demon because he killed himself? If the crazy family member that died in jail became a demon as well, that would have been interesting. So, we've got the past lives that we've seen so many times. I do have to say that the past lives parts were beautifully filmed. Slow motion of her dancing with the swords, her hanbok billowing out, that was lovely. Evil family - check. Red herrings - check. 2ML Lee Sang Yi as Seok Hoon has the look of a villain and they took advantage of that. That character had no purpose other than to show that someone else is pining over the FL. The title of the drama could have been better titled "You think you're a demon? Wait until you meet my family!" Yikes, so much evil. Irritating 2FL that will do pretty much anything to get the ML - check (I am SO tired of this!) Quest for power - check. Everyone in the family has their own wants, they all hate each other and will do anything to gain power. Female hobo that is God - the thing that stuck out most to me was in some scenes they forgot to use makeup to make her teeth look rotten. Then we had the obligatory "things that make you go hmmm" scenes. The police couldn't arrest the bad guy because they didn't have enough evidence? They had him dead to rights, yet they arrested her with no evidence, mainly because she didn't do it! When Koo Won went away toward the end of the drama, where did he go? He went away, but not, he'd come to her at night. And can I just say this woman must be a REALLY deep sleeper if she never knows that he's rubbing her hair, her face, and getting in the bed with her.

Acting: Good, except for the sister of the head guy in the family. She was seriously overacting.

I normally put what I liked at the top, but in this case, I had to rate lower because of all of the above.

CHEMISTRY: Oh, so, good. Both romantically and comedically. They were just such a darling couple together. The wardrobe department dressed them in complimentary outfits, so the attention was on them and their actions. And it doesn't need to be said, but I'll say it, both Song Kang and Kim You Jung are SERIOUSLY beautiful. If I could have seen more of them and less of everything else, my rating would have been much higher.

Kim Hae Sook at Chun Sook. I LOVE her in everything, and when she got killed off early on, I was mad! But here, I was glad of all the scenes where she showed up to comfort Do Hee. The Christmas scene with her, and her family, at gift to Do Hee from Koo Won, was especially beautiful.

I wouldn't tell anyone to run away from the drama if they asked, but I can't really recommend it either. I was so disappointed. I kept holding off on watching it because I thought it was going to be my new favorite. Alas, it was not to be.