i never give high ratings, you can look at my watched list and you will notice. This one kept me interested until the last episode. i loved the fact that they kept the story line complicated till the very end. i loved the fact the played with the whole concept. The acting was spot on, i loved the seriousness  of the whole drama yet it has its tear jerking moments and its comedic relief in certain areas. This series was something unique in its story line. i will definitely re-watch it again in a very near future.  This has made lots of other Korean drama pail in comparison