This is unique in the following ways:

1-King trusted the Queen very much and vice versa. They have a very good relationship and understanding of each other.

2-King is not a puppet to the ministers. He does what he think is right or goes around them.

3-This is the only drama that delves deeply into the Queen's life. Her struggles, pains, duties and crazy life as a mother.

I really enjoyed this show and eagerly looked forward to each episode.

I hope they do a sequel ir something similar.