Should you? Would you? Could you?

You should watch this one.
You would recommend this to others.
You could watch this again, yes.

Sojisub is an amazing actor and he proves it yet again in this one. Though I didn't much care for his hairstyle in this drama, that takes a complete backseat in front of his superior acting. Gong Hyo Jin is another amazing actress and both of them as a lead pair give a performance that is worth watching.
The supernatural element just adds to the uniqueness of this drama. It does get a little boring in the middle but then it picks up again soon.
The acting is just so good that you can't help liking everything they do; you can't help liking this grumpy man!
This is definitely worth watching.
You will be missing some great acting if you skip this one.