I think it's somewhat collective opinion that the drama lost its way somewhere (imo after 10 or 12 episodes). What started out as refreshingly melodramatic and promising became a pointless drag later on. Don't get me wrong everything is great about the drama- the cast, its characters and the introduction. The only thing it did not have was a plot. Actually it did. The sad thing was that the writer tried to fit an excellent 10-episode plot into 20 episodes. That ends up making it 10 episodes of absolute filler and no sense of purpose or direction. It's a shame because it could have been a great drama but resulted in being boring and skippable. I started this drama knowing about the age gap but I ended up wanting an awesome sunbae-hoobae relationship instead. To me the lead pair weren't very shippable and most of their romantic scenes were cringe. I also found them unbelievable because their back story isn't as strong as it is usually in Kdramas. To me the second leads were a complete waste. Yoon Gyun Sang and Lee Sung Kyung are both devastatingly attractive people and decent actors who deserved more than they got. Park Shin Hye was at her best in this role. I do not think she is capable of acting better than she did here. Kim Rae Won always leaves something to desire and I am yet to see him in something that impresses me. There is a chance this drama may end up appealing to some people- fans of the cast, fans of medical dramas or fans of dramas that have lesser makjang than usual. The first four episodes were a lot of makjang but later on it was more of an everyday hospital setup than a revenge drama, which it set out to be initially. This drama has one of the most forgettable soundtracks I have seen listened to. There is not a single memorable track from this. To me this is one of the tens of other forgettable dramas I've watched. However give it a chance if you are looking for something where things are not too serious and characters are kidding around. Get through the first few tearjerking episodes and you are in for a mostly light ride with a number of likable characters. Not to mention attractive people. :D