The drama starts out great and the story starts off really intriguing but near the half starts to take off in a really different reaction. I feel like it is not about Kang Chul anymore. It is only about Yeonjoo and her selfish acts of making this love happen no matter what. The other actors basically only revolve around her purpose and are forced to just go with it despite the dangerous setting.
The acting however is very splendid. Especially the actor that plays Oh Seong Moo. He portrays both characters he plays extremely well in such a way you cannot believe both characters are actually him. Unfortunately the ending sucks. Despite all the shots that show the bond between Yeonjoo and her father (like the pictures on the wall), it seems that she just really doesn't care about anyone but herself. She keeps following her own selfish path to be married to a rich and handsome guy and basically just lets her father rot in the Manhwa.
Made the drama a complete waste of time even though it had great potential. Yeonjoo's hospital boss was right about W after all.