Although I absolutely love the two leads, I totally understand why this drama got dismal ratings. It was a slow drama. The script spend too much time on the male lead obsessing over his unrequited love of a married woman with a zero chance, followed by more timewasting by the two leads obsessing of of the now dead unrequited love with now a minus zero chance. By the time they finally got to the burgeoning relationship of the two leads, of course we had lost interest. And then to top it off, the female lead gets manipulated by a talking device and makes foolish decision. This drama went downhill very slowly.

Since they were already downhill, they could have squeezed in one more episode and ended it properly.

There was a good script and storyline, but bad execution. I watched all12 episodes because I was really hoping things would change, clearly not.