Simply a masterpiece, absolutely great K-drama and one of the best shows ever. Phenomenal storytelling with as much twists as possible, which kept me thrilled during every minute of the every episode. As almost every K-drama I watched, it was simply okay at the first episode, but the second one hooked me up so much. I still don't want it to end and it's impossible to say how much I enjoyed it. I literally cried during the finale. I'm thankful to everyone involving in this series, it made many of my days better. Recommended to everyone.