The first thing you need to know about this drama is that the two leads are amazing together. They're both very talented and own their roles. I should note that this was my first time seeing both So Ji Sub and Gong Hyo Jin act, so I'm not able to compare this to their other performances, but I can say that I loved every moment they were on screen. From two to three episodes in you're already hooked, just waiting for them to arrive on screen. I didn't go into this story expecting much, especially with the premise that it had. It seemed interesting, sure, but ultimately overdone. The writers took a different take on it than what I expected, though, and the whole thing was enjoyable from start to finish... except for a few episodes towards the end. The story's climax feels like it happens earlier on, the rest just added on to make it reach 17 episodes. Story elements, and even characters, are added last minute to add more conflict to the story where it wasn't needed before, and I found even Gong Shil to be growing a bit unlikeable. But the last episode brought it back, and it felt more like it did at the start of the story, so I can't say that the ending was a waste. Still, I can't say it fully makes up for the unnecessary twists that happened before it, so this is where I had problems with the story. It isn't just our two leads who are great in this drama, either. Every character is played very well by some talented actors. I especially enjoyed Choi Jung Woo as Joong Won's secretary. But despite the actors themselves being great, the characters never really gripped me the way I would have liked. I didn't hate any of them, not by any means, but I had to roll my eyes at some of their actions or would fine myself impatiently waiting for our leads to come back on screen. So while everything was well acted, I wasn't very invested in any of them. But Joo Joong Won's incredibly likeable character coupled with the quirky and loveable Gong Shil more than made up for it. Now, is it rewatchable? Most definitely. The moment I finished it I already wanted to go back and rewatch. Except I would maybe skip the last few episodes, as they just draw out the story.