In which district in South Korea was this 2004 drama film by the director of "Marriage Is a Crazy Thing" (2002) set?
Yoo Ha:  He directed the critically acclaimed films "Marriage Is a Crazy Thing" (2002), "Once Upon a Time in High School" (2004), and "A Dirty Carnival" (2006). Once Upon a Time in High School: Once Upon a Time in High School: The Spirit of Jeet Kune Do (Korean: 말죽거리 잔혹사 ) is a 2004 South Korean drama film. Once Upon a Time in High School:  The original Korean title literally means "cruel history of Maljuk street" and one of the filming locations was the present neighborhood of Yangjae-dong, Seocho District in Seoul.
Seocho District