The beginning, from episode 1 to 3 is rather slow. I had to kinda force myself to watch the sequel thinking it was going to be just as slow AND boring. The more the series progressed, the more interesting it became.

We see very clearly Won-deuk and Hong-sim's relationship "improving" as the episodes progress. The character of "rich heir who doesn't care about anything" gradually improves into a generous and helpful person, although sometimes he comes to the surface (don't forget that he is still the crown prince...).

Conclusion : It's a pretty good series but I won't watch it twice, I think.

Good viewing to you ! :]