The chemistry between Yoo Ah In and Kim Hee Ae is breathtaking. I am obsessed with these two, Oh Hye Won and Lee Sun Jae. Moreover, the whole drama is an emotional rollercoaster. From Episode One to the sixteen, a crazy ride. My favorite parts are the secret love affair parts and the piano playing parts. The next thing is the Screenplay, cinematography, music, acting, editing, and directing! All of them out of this world. also, the ending is sad, wild, and crazy! I wish there was another episode, where the ending is a bit clearer and shows the future between Oh Hye Won and Lee Sun Jae.