This is a very touching story and I thought they used the short time they had to tell it very well. It clarified everything it had to without dragging on and on, which is always good. Another good thing about this drama is the flashbacks. This is one of the few times I've felt flashbacks are completely necessary and actually helped in the storytelling. I believe they were employed well, and even though they were used a few times, I didn't feel they were abused and that every single one of them achieved its purpose. The acting was good and the two main leads were more than just good.I thought they portrayed their characters very well. The music helped convey the emotions of those characters too. The only thing that wasn't good were some rather strange/fake effects, but those are not used a lot. I have to mention another thing which is not really important, but this is possibly the only drama where I have to bow to the stylists. I loved the costumes, both the modern time clothes and the ones in the historical time. I will very likely be re-watching it soon since it's only two episodes and it doesn't drag.