okay so i just finished this drama, I cant say that it was perfect but the cast certainly were, and the ending left a mark in me ( Usually in the last episode of every drama ends up being rated low as it didn't meet my expectations but not this one, this one hit me deep and made perfect sense to me).
the story in the beginning may seem normal to you and similar to political dramas, but its not really the cast were smart in their movements and the tricks and schemes from all sides were good which makes it very interesting to watch, it didnt drag quite the opposite the number of episodes were pretty good and keeps you attached.
The acting for me was flawless, perfect choice of cast, I mean its Nam Gong Min and he is certainly a top rated actor, nevertheless the rest of the cast was just about right.
The script lines, hidden messages, and quotes hanging on the walls were really good. I would recommend this show to anyone without a second thought.