I came into this show expecting quite a bit - given it was written by the Hong Sisters, and had a good cast with Gong Yoo and Lee MIn Jung (Suzy is just meh for me). But it turned out to be such a mess. The drama starts off really slowly compared to other Hong Sisters' shows. The story plodded along really slowly in general. A lot of the storyline and character growth that occurs from episode 11 onwards could really have happened earlier. The story also subsequently deteriorates into typical Korean drama territory (aka noble idiots and being nasty on purpose to distance your loved ones from you - URGH cannot stand these overused storylines), which just makes me want to give the characters a slap in their faces for being so stupid. In any case, I really expected more from the Hong Sisters. It feels like they were tired of writing fresh dramas and just threw in stereotypical plot twists. Gong Yoo really won me over with his portrayal of Kyung Joon's emotions - a young man trapped in a grown man's body, trying hard for Gil Da Ran to take him seriously. But towards the end, as the story deteriorated, so did my affection for him and his character. Lee Min Jung - not much to say about her. I think she did the best with what was written for her. Oh Suzy.. You are a pretty face, but so far in the shows I've seen her in before this (Dream High, Introduction to Architecture), her characters were pretty one-dimensional. So is this one. Unfortunately her facial expressions were still pretty 'wooden' (stiff) in this show and it doesn't help that her character is quite annoying too. Poor Shin - he barely got any screen time after the body switch. By the 14th episode I was so exasperated with the whole show that I was just happy to be watching scenes with Gil Choong Sik (Baek Sang Hyun's character). Throughout the show he was cute, sincere, a little stupid but very endearing. And the 15th episode was completely useless in terms of plot development. As with the other reviewers, this is my reaction to the ending: HUHHHH?!!