L'umanità è stata sconvolta da un'apocalisse biochimica che ha cancellato il genere femminile dalla faccia della Terra. Poche città abitate esclusivamente da uomini resistono ancora, trascinandosi nei secoli grazie ai geni di un'unica donna sopravvissuta da cui, in laboratorio, vengono generati nuovi bambini. Uno status quo che viene spazzato via da un oscuro complotto che farà intrecciare le storie di tre uomini perduti in un mondo che cerca di non morire...
Moto Hagio (萩尾望都 Hagio Moto) is a manga artist born in Ōmuta, Fukuoka Prefecture, Japan, though she currently lives in Saitama Prefecture. She is considered a "founding mother" of modern shōjo manga, and a member of the Year 24 Group (24-Gumi). She helped pioneer modern shōjo manga, modern science fiction manga, and BL manga. In addition to being an "industry pioneer", her body of work "shows a maturity, depth and personal vision found only in the finest of creative artists". She has been described as "the most beloved shōjo manga artist of all time."
Moto Hagio made her professional debut in 1969 at the age of 20 with her short story Lulu to Mimi on Kodansha's magazine Nakayoshi. Later she produced a series of short stories for various magazines for Shogakukan. Two years after her debut, she published Juichigatsu no Gimunajiumu (The November Gymnasium), a short story which dealt openly with love between two boys at a boarding school. The story was part of a larger movement by female manga artists at the time which pioneered a genre of girls' comics about love between young men. In 1974, Hagio developed this story into the longer Toma no shinzo (The Heart of Thomas). She was awarded the Shogakukan Manga Award in 1976 for her science fiction classic Juichinin iru! (They Were Eleven) and her epic tale Poe no ichizoku (The Poe Family).