Intense pace but perfectly controlled. Great plot, great story, great acting. OST lack a bit of pop culture but is still very good. The main actor and actress are really EXCELLENT. Most other kdrama have bad actors or bad plots. This one is almost perfect!

The emotional intensity of the main character are so great and it is intensified with the great score. ONE little mistake of this is their description of a psychopath. It is mostly true but not really accurate, because the main actor is too emotional in his facial expression and saying that psychopath can evolve into a normal being is simply not true.

Because of this, I'll be lowering scores for other series. This is now the new reference for masterpiece.