I was fairly surprised by how good this drama is. I am not a very big fan of gender bender roles, but I decided to give this a chance after watching 'Sungkyunkwan Scandal' and 'Hana Kimi'. It was not at all disappointing. Although the plot is guillable, the cast isn't. If it hadn't been a good cast I would have given up on this show in the first episode itself. It was funny right from the funny episode so I decided to continue it. I really, really liked it. All the characters grew on me slowly and now it is definitely one of my favorite dramas. The only character I didn't like was Go Mi Nam. I wasn't a fan of hers. I get that she was about to be a nun and all, but that doesn't mean she has to be all that clueless about things. Also, I didn't like the way she was with the other nicer guys who genuinely loved her compared to Tae Kyung. He was overly domineering, harassing and downright offensive. I didn't like the fact that the girl was a total pushover. She seemed to lack self-respect and pride but she had plenty of selfishness. I didn't buy her angel-like innocent side. Jeremy was probably the best character by the end of the show. He had more sides and depth to him than others had. He was kind, loving, caring and equally funny and entertaining. I would have probably chosen him over the other two. Shin Woo was alright but he had no personality other than his overly cheesy romantic side. It just didn't touch me. And I did like Tae Kyung- he did some pretty great things for Go Min Nam/Nyu but I think had it been Jeremy or Shin Woo, they would have probably done the same for her. So I kind of question this "one and only one" when it comes to his case. The writing of the show is just alright. It lacked originality. All the sub-plots and ideas have been overly used. The direction of the show was also pretty alright. So because of a lack of original story line, it is not going to be the best drama I have seen so for. It did get pretty lackluster in the last few episodes, but it was still a better show than so many others I have been recently watching.