I had kind of a hard time getting into it at first. It didn't seem very original with the whole royal marriage thing... But as I continued, it did have an addicting effect due to the high level of dramatic events.
But first I have to say something, what is it with koreans and european royalty/super rich and cool celebrities? Really? I live in Europe, and I can assure you none of the princes are like THAT!
And even in kdramas there is always some kind of famous singer or actor with lots of money and big cars. Are they that obsessed with it? Come on! That's one reason why I'm starting to dislike Manwha.
Another thing I absolutely hated about this one were the photos of europe they used. And then they even tried to put the drawn characters in them? That totally didn't work, it was awful to look at.
The amnesia thing was pushed too far for me, and I agree with others here about the amount of drama. I like angst stories, and up to a certain point, I really felt with the characters, but in the end it really wasn't believable anymore. If you drag on the same problems over and over again it gets really, really old and absolutely unrealistic. They should've gotten over their 'constantly hurting each other' earlier, and the writer could have made up another problem if she still wanted to go on with the story. There are plenty of other complications she could've found. It annoyed me when they were so horrible to each other chapter after chapter with no promise of any of them of getting over their pride and childishness. Grow up!
And I just don't like it when every guy that shows up falls for the girl. What was it, four? That's pushing it. It's practically harem.
Now for the good part: despite all these shortcomings, it was very addictive and very intense. I enjoyed most of it until the end, and I'll probably remember this story. And the art, which is quite important to me, was very beautiful too. Usually I don't like manwha art so much, but this is one of the better ones.
I recommend to read it, because the basic story is very beautiful and intense, quite unlike others (once you cleared the first chapters). It could've been better though. It just all kept getting darker and more painful, I feel there was no room for the more complex human psychology that not only focuses on those things. They could have had deeper and more intricate personalities, evolving more noticeably and more quickly in time.
And please PLEASE, DO NOT EVER USE PHOTOS IN MANGA/MANWHA EVER AGAIN!!!!!!!!!!
And Koreans, get over your european prince/super star complex.