"Number9Dream" is a novel by British author David Mitchell, published in 2001. The story follows a young man named Eiji Miyake who travels to Tokyo in search of his estranged father. The narrative blends reality and fantasy, exploring themes of identity, love, and the impact of dreams on life. The novel is notable for its unique structure, incorporating elements of magical realism and nonlinear storytelling. It reflects Mitchell's signature style, which often intertwines multiple narratives and genres. "Number9Dream" has received critical acclaim for its imaginative prose and depth of character development.