Tokyo: Kodansha, 1970. Softcover. First printing of this edition. Paperback edition from the "Gendai Bungaku Meisaku Shireezu." Fine in printed wrappers with original bellyband. Translated into English as "Inter-Ice Age 4." A dark science fiction story about human responsibility to the present, and about a future over which mankind often has little or no control. Text in Japanese. [Book #114205]