I have learned so much watching this drama, i think more than I even learn from school (lols).I think I learned enough to write a book out of it. I wished for a different ending ending but because of how good rest of the story I till give it a prefect 10. It is brilliantly written, I tells us about: love, greed, loyalty, betrayal, reasons, excuses, purpose, failures, success, discipleship, leadership, camaraderie , friendship, negotiation, submission, wisdom, foolishness, politics, life, death, struggles,rewards, etc etc etc. I understood everything the writer was trying to show, of course with the help of the brilliant actors,everyone in the drama was consistent in their acting. Seeing Jo Hyun Jae's smile makes it even more worth watching.