All the actors were perfectly casted. I could not pick a favorite in this one - Wi Ha Joon, Lee Dong Wook, N, Lim Ki Hong, Cha Si Won - all top notch! Choi Kwang-Je and Sung Ji Ru kept me smiling everytime they came on screen. Han Ji Eun was good, but her character itself felt almost as an after-thought. But, Kim Is Ha really stole the show in her scenes - such good acting from such a little one! Too many other good actors to name, but they were all enjoyable to watch. The script jumped around too much for me. It was fast pace and interesting, but just missing something. The show was a solid 8.5 but I gave it a 9 because1/2 stars are not an option.