Kōichirō Uno (宇能鴻一郎, Uno Kōichirō; b. July 25, 1934) is a Japanese author of erotic novels. His works have often been filmed, most notably by Nikkatsu studio in a prolific series of Roman Pornos giving the author's name in the title. He also won the Akutagawa Prize for Kujiragami (鯨神).
Source: “Kōichirō Uno”, English Wikipedia (CC BY-SA 4.0), excerpt