There are many pluses to this story. An intelligent heroine, interesting characters, an exotic setting, lovely art and what was at first a great storyline. However, there are way too many problems for me to adore this manga as much as other people do. While, yes, it's wonderful to have a strong female lead who doesn't wait for a prince to save her, Yuri's character ends up being too improbable and "perfect," for lack of a better word.
She learns excellent swordfighting in a couple of months because she's done gymnastics before? She's able to lead armies into battle after two years (most of which was NOT spent at war) because...um, she's naturally gifted, I guess? Guys (especially princes) keep falling for her because she's so capable and perfect...? (And it seems like each one of them aaaalmost rapes her but she always gets rescued right before it happens.) In the end, she turns out to be a very one-dimensional character--righteous, loyal, not an evil thought in her head, kind, generous, blah blah blah... and that's really very boring.
But what probably annoys me the most (more than the modern day peace sign the Hittite girls made in 14TH CENTURY ANATOLIA, sheesh) is how the political plot gets incredibly stale after a few volumes. If you don't like reading about political machinations, this might not be the story for you, since they end up dominating the series after a few volumes.
From the story summary and the very first chapter, you know the villain is the Queen. She tries over and over again to seize power from Kail and to kill Yuri. It's NOT a secret! The main characters all know she's trying to kill them!
And what do they do? Foil her plots at the last minute, then almost kinda sorta try to prove she's behind the evil plans, then fail to convince other people of it (because the Queen denies all accusations and then walks out of the room in a temper and that, like, totally somehow proves she didn't do it), then they just sit around and do nothing while she comes up with more schemes to kill them!
Where are the attempts at bringing her down before she kills them all? Ugh! But I understand why the mangaka keeps the Queen going--it strings along the plot, even though the series could deeefinitely have been chopped in half without missing any new plot developments. I just eventually got tired of the continual "Ah hah! Yet another twisted scheme for me to set into motion!" plot pusher from the Queen. She also became incredibly one-dimensional, when every bit of her energy is set to making her own son king. 18 volumes later and there's STILL no character development.
That being said, I did cry during some really sad moments (you'll know them when you read 'em!), I did cheer when Yuri kicked ass (no matter how improbable it was) and I did enjoy Kail's character. Though I can't get myself to like the series (or even get past volume 18), it's worth trying out.