Yeo Jin Goo's acting is really to be applauded in this show. As well as the other actors. I watched the show for Gong Seung Yeon having no clue who Yeo Jin Goo was and this show converted me. The chemistry between the actors is awesome and I don't mean the love line. Considering the fact that the two brothers are played by three people and the brothers spend a lot of the show apart, it is really amazing that I care about the characters as much as I do. The writing is tight for the most part. It helps because it's a short show and it has a fascinating premise. You will laugh, you will definitely cry (but not for a long time) and it will be an awesome experience. Have fun!