There are 2 Kramas that made me watched until the very end : Kingdom and Arthal Chronical (AC). Story is well written and casts are amazingly good. I am not a fan of Joongki Song and dont fancy his character on Decendent of the Sun but have to say that Arthal Chronical gave him an opportunity to shine and gave the audiences/viewers a chance to see how versitile he is as an actor. I can tell the differences in the twin characters - both portraited by Joongki (one is innocent sweet boy transforming into a grown man embracing and fulfilling his destiny and the other one is dark and cunning and lonely man)
The best part of this drama is Tanya's dance at end of Episode 12.