Let's be frank, we all watched it for Taehyung. Sadly he has no happy ending which kinda broke my heart. But that's not the reason I dislike this drama so much.
First of all, the male lead was super annoying. He always stole the show of the king and made himself so important. I liked the king so much more, he deserved so much better ...
Secondly, the female lead... Do we even have to talk about her? Her character was so fcking shallow, i don't get why the male lead and the king both liked her. She cried almost every episode and had absolutly no character development.
Last but not least, the love story??? Of "brother" and "sister"? WTF? So weird and absolutly not enjoyable to watch.

All the supporting characters were great, just the male and female lead and their love story were absolutly not it.
Therefore I don't recommend this show AT ALL.