Sputnik Sweetheart

First English of the novel; the Japanese original was published by Kodansha in 1999. Both the Knopf US hardcover and the Harvill UK paperback appeared in 2001, and the precise month-level precedence between them is not firmly established, so neither should be asserted as the outright true first over the other. Collectors generally treat the Knopf hardcover as the primary collectible form.