Bo-na's character carried the whole show.

Other characters didn't seem to have enough personality, especially Park Shin Hye being the main lead. Her acting was so good, yet the plot of the each episode after the first one is boring. I wish they had delved more into the lives of each heir like their company and had problems of their own, not just the romantic problems of the love triangle. It just isn't enough. The cast is good, the acting is good, the production is also good. Just the writing, and directing didn't click