Hiroshi Yamamoto was born in 1956 in Kyoto. He began his career with game developers Group SNE in 1987 and debuted as a writer and game designer. He gained popularity with juvenile titles such as February at the Edge of Time and the Ghost Hunter series. His first hardcover science-fiction release, God Never Keeps Silent became a sensation among SF fans and was nominated for the Japan SF Award. Other novels include Day of Judgment and The Unseen Sorrow of Winter. Aside from his work as a writer, Yamamoto is also active in various literary capacities as editor of classic science fiction anthologies and as president of To-Gakkai, a group of tongue-in-cheek "experts" on the occult.