This paper examines the space called “postwar Japan” in Yokomizo Seishi's “Gokumon-tou” (1947-48). After World War II, what stories were discovered and called to understand and rationalize the fact that it was a defeat in Japanese language And how has literature been sympathetic and countering in it. Under this awareness of the problem, Yokomizo Seishi's “Gokumon-tou” examined how he looked at postwar Japan and how he reproduced the desires of the public at that time. Popular narratives selectively reproduce the public's consciousness and build a common world of experience through stories. In other words, it serves to create and communicate new experiences while responding to the public's desire to tell a story. Until now, in Japan's postwar literature research, popular narratives have been dismissed as peripheral. However, when activating research on popular narrative, the multifacetedness of postwar literature is better revealed.