first of all great drama regardless of the things i am going to say later you should give it try their is no doubt about watching value of this drama .....first of all acting was wonderful great work by actors not only main leads all the actors and actresses did a great job..... then the music was fabulous .....it was catchy it was pleasent now the main thing the only thing i and millions of kdrama fans didnt liked was the holes in story everything till 13 episode was very done it was a masterpiece in my list but then writer director couldnt digest this much positivity form viewers and messed it all up i still cant wrap my mind about what happened in last two episodes everything was too fast it was like i was watching in 2x ....many people will say this is all beacuse they didnt end up together and all but its not all about that yes i am angry about writer showing us shitty 'reality'based ending but come on the one thing i hate more than sad ending is open ending they didnt explain things in the end at all and the most wanted still remains 'who is her father'....i will give this drama 10 star when they give us special episode a movue or anything just anything which explains everything...still i had a very good time watching those 13 episodes.