"Is the World Below a Dream?" is a historical novel by Akira Tsumoto. It was serialized in the Nihon Keizai Shimbun from December 1986 to July 1989. It was supported by business readers and became a bestseller in 1989. The single volume was published by Nihon Keizai Shimbun in 1989. Later, the Kodansha Bunko edition was published in 1992, and the Kadokawa Bunko edition was published in 2008. The novel features Oda Nobunaga as the protagonist and depicts the period from the Battle of Okehazama in 1560 to the Honno-ji Incident in 1582. The number of copies published exceeded 1 million for the four volumes published by Nihon Keizai Shimbun, whereas Tsumoto's novels had previously been said to have only reached 300,000 copies. By the time of Tsumoto's death, the novel had exceeded 2 million copies." From Wikipedia. "In the Sengoku period, when many warlords were vying for power, Oda Nobuhide, the father who had cut down and subdued half of Owari, passed away from illness without fulfilling his ambition to become a feudal lord. Nobunaga, who succeeded him and was surrounded by enemies both inside and outside, won the civil war and finally defeated the formidable enemy Yoshimoto Imagawa at Okehazama, and then began to conquer Mino. He was about to take a big step toward unifying the country... This is a monumental work that approaches the true face of the revolutionary Oda Nobunaga and caused an unprecedented boom." (Kinokuniya Bookstore) This is a set of four volumes of Akira Tsumoto's "Is the World Below a Dream," first edition, published by Nihon Keizai Shimbun, June-August 1989, with obi. The cover design is by Nobuyoshi Kikuchi. There is little yellowing due to aging, and there are no stains, writing, or library stamps on the main body. Please consider purchasing after understanding that this is a used book.