Who the hell decided to cast Han Ga-In as a grown-up Kim Yoo-Jung ? It was a terrible mistake and totally destroyed the show! With all due respect to her, she looks nothing like Kim Yoo-Jung and frankly her acting was mediocre at best. Funny thing is, Nam Bo-Ra would have been so much better for this role as one could easily believe thats a grown up Kim Yoo-Jung. Han Ga-In would have suited much better as a grown-up Joon Bo-gyeong.
It was a great storyline but the bad casting spoiled the show for me. I still gave it 6 because of Kim Yoo-jung in first 8 episodes and wonderful performance by Kim Soo-Hyun as the King in remaining episodes.