Definitely a worth the watch

Rating: 9/10 (28 March 2020)

Even though it took a while for me to catch up with the scenes and the translated English subtitles, (as I do not understand the regional language), the movie kept me glued to the screen the entire time.
The movie is sure to give to chills in the spine by the end, as all the super richie-rich, goody-goody, cute-cute, sophisticated scenes suddenly goes down the drain (literally, with the floods).
Loopholes:
The movie would had been even more realistic if - they had shown how a person feels the pinch of sunlight when they come out of the basement and sees the sun after a long time. Rubbing through eyes and showing the transition while entering the kitchen would have made the scene look more real.
Living in the basement would make the skin dull and pale. But the characters looked as healthy as ever, even after staying there for over 4 years.
Instead of all clean shaven and hair styled up, showing haphazard hair growth and beards would have made the characters look more genuine.
The scenes never showed any traces of blood footprints after all the murdering, especially, when Kang-ho song escapes.
Plus points:
Overall, it was definitely worth a watch as it showcases the socioeconomic gap and difference.
As I firmly believe that there are only two religions - the rich and the poor. The movie proved that a rich person's life goes on while the poor keeps struggling for the rest of their life.