This Kdrama is a fusion of gratification of revenge and the fineline of morality and humanism. It is narrative from the perspective of the victim but the story is told in sequence with amazing film techniques. At first I watched it over new years and was skeptical over the stereotypical troup of bully and victim but the fact that justice was being mitigated over the past brings into perspective the fact some people are innately evil - no spoilers I wanted to so bad but it's such a good watch.
The idea that evil is in nature, caused by the environment and entrainment. The actors did amazing expressions and mannerisms. It was believable and highly immersive. The film did not focus too much on the sad pathetic type of life the main character underwent but forged on which gave me great satisfaction.
Trauma is a heavy theme and the fact that there was a cliffhanger at the end of episode eight enrages me so maybe wait till season two is out in march :)