Following this, Bong took some time to contribute short films to two anthology film projects. "Influenza" (2004) is a 30-minute work acted out entirely in front of real CCTV cameras stationed throughout Seoul. The film, which charts a desperate man's turn to violent crime over the space of five years, was commissioned by the Jeonju International Film Festival, together with works by Japanese director Sogo Ishii and Hong Kong-based Yu Lik-wai. "Twentidentity", meanwhile, is a 20-part anthology film made by alumni of the Korean Academy of Film Arts, on the occasion of the school's 20th anniversary. Bong's contribution is "Sink & Rise" (2003), a work set alongside the Han River.