“A Bittersweet Life” (2005) is a gripping South Korean crime thriller directed by Kim Jee-woon. The film follows Sun-woo, a loyal and efficient enforcer for a powerful crime boss. When tasked with surveilling the boss’s young mistress suspected of infidelity, Sun-woo finds himself embroiled in a complex web of deceit, loyalty, and vengeance. His decision to spare her life sets off a violent chain of events that pits him against his own organization. The film is renowned for its stylish cinematography, intense action sequences, and its poignant exploration of honor and betrayal in the criminal underworld.