is a Japanese novelist and author. He is best known for the controversial The Devil's Gluttony (悪魔の飽食) (1981), which revealed the atrocities committed by Unit 731 of the Imperial Japanese Army during the Sino-Japanese War (1937-1945). He won the Edogawa Rampo Award in 1969 for "Death in the High-Rise". His short story: "Devil of a Boy" appears translated into English in "Ellery Queen's Japanese Golden Dozen: The Detective Story World in Japan" anthology, which was edited by Ellery Queen.