I'm normaly very critical and I have the urge to point out tons of problems in dramas. But this time I am very impressed. The story is great. I always felt satisfied after every episode and could not stop watching it. Each character was very different and complex, they always kept me hanging. You could never be sure were the story would go. What the characters were gonna do. This is a drama anyone can find interesting. The suspense is really strong. It reached the top of my list very fast The whole cast did great. I know its not gonna be a surprise to say that Ji Sung did an amazing job with this role. But I still have to note that his acting really got to me, I legit tried to fight back my tears, but is was all in vain. ( they still got out ) Normaly I don't comment about the music, but I replayed the music a lot and I even made a playlist soo... its dope. I can definitely see myself rewatching it very soon it was worth my time. It was a very enjoyable emotional rollercoaster, which i highly recommend~