Due to the long-standing labour shortage in Japan, the issue of migration has recently come to the forefront of public and private discourse. This article examines a hitherto under-researched area, namely, how Japan has maintained its traditional homogeneity and Japan’s reluctance to accept migrants and refugees. To this end, we have attempted to examine why there is a reluctance to accept refugees. We assume that homogeneity fosters a culture of rejection. Using snowballing, we interviewed 12 Japanese (students and professionals) and 15 foreigners (professionals and students) who have lived in Japan for at least ten years. Our arguments were supported by empirical information and underpinned by the theory of ethnic demarcation and homogeneity. This research has critical policy implications for refugee regimes and host countries.