Oldboy (2003) - A man imprisoned for 15 years seeks vengeance against his mysterious captor, delving into a twisted web of secrets and betrayal.
I Saw the Devil (2010) - A secret agent goes to extreme lengths to exact revenge on a serial killer after the murderer targets his fiancée.
Sympathy for Lady Vengeance (2005) - After serving time for a crime she didn't commit, a woman plots a meticulous plan to seek revenge on those responsible for her imprisonment.
The Man from Nowhere (2010) - A reclusive pawnshop owner with a violent past becomes entangled in a ruthless drug cartel's operations while trying to save a kidnapped girl.
A Bittersweet Life (2005) - A loyal gang enforcer finds himself at odds with his boss when he falls for a woman targeted by the gang, leading to a violent clash.
The Handmaiden (2016) - A con artist and a wealthy heiress collaborate to swindle the heiress's family, but their motives evolve in unexpected ways.
Bedevilled (2010) - A woman subjected to severe abuse on an isolated island returns for revenge against the villagers who turned a blind eye to her suffering.