Japan mentions six key conditions foreigners must satisfy before becoming citizens. Photo Credit: Anadolu, ZeynepKaya Source: Getty ImagesSource: Getty ImagesUnder the Japanese Nationality Act, the Minister of Justice holds discretionary authority to approve or reject each application. 6 conditions for Japanese naturalisationArticle 5 of the Japanese Nationality Act sets out the following requirements:1. DomicileThe applicant must have resided in Japan continuously for five or more years, maintaining a valid status of residence throughout that period. Naturalisation in Japan remains a discretionary process, and the final decision rests entirely with the Minister of Justice.