This was so good that just when I thought that k-dramas stopped producing masterpieces after writers such as Park Hae-youn, Yoon Ji-ryeon and Lee Woo-jeong set the standard, I watched this and changed my mind. There are good dramas and great dramas. This surely falls in the latter category and now unfortunately the wait begins again, until I find another great drama that leaves me with this much awe. I think the last time I loved a historic drama so much was during Queen Seon Duk, when I was still a kid. The Kingdom series was also amazing and this is definitely in the same category of great cast, great writing, great direction.