Hiroshi Sakurazaka is a Japanese author best known for his science fiction works. He gained international recognition for his novel All You Need Is Kill, which explores themes of time loops and warfare. The book was later adapted into the Hollywood film Edge of Tomorrow, starring Tom Cruise. Sakurazaka's writing often combines elements of action and philosophical inquiry, making his stories engaging and thought-provoking. In addition to All You Need Is Kill, he has written several other novels and short stories, contributing to the contemporary landscape of Japanese literature.