This article examines the issue of dual citizenship in Japan, which is not allowed due to a desire to maintain a homogenous population without foreign influences, ensure loyalty and allegiance to one nation only, avoid confusion over laws, and reduce potential for double taxation. Challenges faced by dual citizens living in Japan include difficulty obtaining visas or residence permits from other countries, potential difficulties with finding employment or housing due to their foreign status, and inability to vote or participate fully in political activities. There are certain cases where it is possible for individuals to hold two nationalities simultaneously without having to renounce one or the other. Allowing dual citizenship could bring numerous benefits such as increased economic opportunities, more efficient immigration process, and improved international relations. Ultimately whether or not dual citizenship should be allowed is up each nation’s discretion.