If I had to describe this drama in one word, it would be underwhelming. The premise is great and the first couple episodes are also great, it was moving fast, and then nothing happens for 13 more episodes. I'm not kidding. You could watch the first episodes and the last one and nothing in the story would change. Sure there are some comedic bits and some very minor misunderstandings but there is no actual conflict that needs to be resolved until the very last episode. And the minor issues that do occur, the female lead doesn't even know about them because the male lead is constantly treating her like a child and not telling her anything.
The female lead is great. She has a lot of charisma, is independent, and goes for what she wants. The male lead and the second male lead are 2 of the most boring characters I've ever seen. It got to a point where I was thinking, no matter which one she ends up with I don't care either way. None of them deserve this queen. Also, the fact that he is 1000 years old usually isn't an issue for me. I'm weird and I like that kind of theme but ugh they kept pressing the fact that he was old, and constantly comparing him to an old man it was so CREEPY. And it really doesn't help that he was constantly lying and withholding information from the female lead. It really gave me weird abusive vibes similar to real relationships when the man is too old and takes advantage of a young woman.

I'm guess more than anything, I'm just disappointed. I feel like with this kind of theme they had free rein to do whatever they want and instead they gave us the bare minimum.

I would not recommend unless you are very new to dramas.