Honestly, I hate this manwha so much. It just about covers everything I hate in a series - the whole 'love at first sight' cliche, great character development being completely undone for no valid reason, 'perfect' characters, and a dozen other things that I can't mention because I don't want to give you too many spoilers. What pisses me off even more though, is that despite all of that it's actually a good series. If it was a bad series, there is no way I would have felt so compelled to finish it, nor would I have cared what happened to the characters, and I certainly wouldn't be quite so angry at it.
So the story - the perfect ruler of the perfect country falls head over heels for a normal Korean teen (you know, as you do) They begin a complicated relationship, with seemingly nothing going right. It takes quite a few very dark turns, to the point where you wonder how either of them are still sane (I mean, they're probably not, but that's besides the point) I don't want to spoil too much, but you can expect a lot of drama. A lot of drama.
The main character, Jay, is about as ordinary as they come. She wants to be an artist, but her mum pretty much refuses to let her. Other than that, she is a very stereotypical shoujo heroine. She actually gets some really interesting character development at certain points, but I think the author kept forgetting that and reverting her. And then there's the perfect prince, who is really lucky he's fictional, because otherwise I would have killed him by now. At first I didn't like him because he seemed to perfect, and any character development he got only served to make me hate him more and more. Of course, there are other characters, all of which annoyed me to various degrees, but they're all fairly interesting to read about.
Artwise, it's basically normal shoujo style, except the lips are goddamn huge and I genuinely couldn't tell three of the characters apart. So, not too great then.
If you like drama, then dear god will you love this series. Especially if you love dark drama - seriously, all those abuse tags are there for a reason. If you're not a fan of drama, stay the hell away.