This article explores the history and current status of dual nationality in Japan, how it affects those living there, and the pros and cons associated with holding multiple citizenships. Japan's Nationality Law does not recognize dual citizenship, requiring individuals to choose one citizenship over another if they wish to remain a citizen of Japan. Acquiring additional nationalities while living in Japan can be complicated due to the strict interpretation of Japanese law regarding multiple citizenships and must involve renouncing existing Japanese citizenship before applying for another one. Despite potential implications, many people find that obtaining multiple citizenships can provide them with numerous benefits such as increased travel opportunities, access different social services, and tax benefits.