Special about it was the cast,who did fabulous job along with lead actor.jong suk acting cant be questionable and han hyo joo was pretty.the comic genius and coy doctor chemistry gives chills.as there is no love triangle or love at risk climax just simple love story.must watch every kdramas fans.though ending was not as expected but it had to be that way.W -got hyped in 5 mins of its start.songs are pecfect specially sung only for dramas.dont look for more reviews just give it a try,definitely you will love it.