Pop art is an art movement that emerged in the United Kingdom and the United States during the mid- to late-1950s. The movement presented a challenge to traditions of fine art by including imagery from popular and mass cultures, such as advertising, comic books, and mundane cultural objects.
In 2001, Murakami developed a style of art called Superflat. Superflat uses bright colors and repetitive designs that reflect popular Japanese culture. Often categorized as a Japanese form of Pop Art, Superflat has become an international phenomenon reinvigorating Pop Art.