The story line is exciting and inspiring at the same time. I fell in love with the characters and also the great plot twists and turns throughout the drama. There are subtle hints throughout the drama but is enough only for you to be excited and be more curious thus not ruining the plot twists. I love the house used as the setting, most particularly the secret room below the stairs and the glass roof. The casting is perfect specially the for the female lead because it's really hard to portray such character of being immature but still maintaining the composure of being mature. If someone else starred on this drama, it might actually be overly cute that would be very mushy for the show but this one is just perfect. I usually hate antagonists but for this one I'm glad that I was able to see the antagonist changing for the better and being friends with the protagonist. Also the male lead actually stole my heart completely.

Another plus points for adding classical music throughout the drama. I as able to understand more about classical music. The OST is one of the best part for me. It made me cry several times and I keep listening to those songs on my playlist even though I finished watching the drama. If I were given a chance to re-watch 50 K-Dramas before I die, this would definitely be part of my list.