This is a dark romance with well executed plot and great acting. While it is not my favorite drama, I had to give it a 9 because it was so well done. This is one of the first serious J dramas that I did not get frustrated with due to large quantities of seemingly unnecessary tragedies befalling the characters. The story was resonant, the characters were complicated and round, and I never got bored. The ending was fitting, poignant, and took time to properly wrap all the ends. Nothing was rushed or overlooked. I continue to be quite impressed with Hasegawa Hiroki's acting. It wasn't just believable, it was real. The chemistry between the lead couple was some of the best I've seen in a J drama. The soundtrack was strong, and unique. There was one piece that had a wild Celtic sound to it, another that was reminiscent of "Once Upon A December" from Anastasia, as well as a variety of other music. It was used to great effect to enhance the action and different moods. I will be rewatching this. I may already know the basic story, but the story is so rich in detail and characterization that it really doesn't matter. I also have a good ending to look forward to again.