This is definitely one of the most iconic K-series I have ever seen. The low ratings are primarily due to viewers disliking how their favorite characters died early and their dissatisfaction with the ending.
However, I believe the ending reflects the reality of humanity: the bad ones often benefit the most and remain until the end.
There are many themes worth contemplating that encourage self-reflection. I will never forget this drama, and Iโm sure it will be one of the most iconic dramas in the television industry.