SKY Castle is almost like the drama version of Parasite, minus the theme on the broken education system (well not really, there's a similarity here since the poor son entered into the rich family's house as the English tutor for their high school daughter). The rich families in SKY Castle resemble the rich family's life in Parasite, except in the movie there's not much background about the rich family so you have to extract it from their small conversations, e.g. when the husband and wife are spending the night together on the couch. Both are heavy on social commentaries and have a good mixture of satire and shock elements. Enjoy!