My first Korean show and I absolutely loved it. Nothing has come close to the brilliance of this show yet. Most Korean shows drag on with unnecessary girl boy drama and reek of co dependence in every scene. It was delight that both the hero and the heroine had their own lives and missions instead of circling each other. Not sure why people thought it was complicated. I love impossible love stories, time travel and parallel universe and the king delivered all three aspects beautifully.