The male lead (princess's double) is quite smart and quick on his feet. The female lead (the princess) also appreciates his insight and while being well educated herself, can be a bit unwise outside of her elements.
They're both a bit too mature for their age, and perhaps it can feel wrong at times, especially when it's about the guy who married the widowed queen, her previous lover. He's quite creepy, I wonder what his goal is.
I love how both of the leads respect and care about each other. I don't know if the romance is going to be about them, but I do hope so, they're both cute together and have great chemistry. I really hope the tragedy elements of this story don't separate the two.
In of the story, a lot of events happen rather quickly and there's certainly a lot of political intrigue and disputes springing up. I look forward to reading this in it's entirety once it's complete!
Edit: Welp, spoke too soon. The way this is just seemingly unpredictable is one of this manga's best parts. I was surprised at the developments in only 5 additional chapters. Definitely a 10/10.