Becoming a Japanese citizen requires meeting legal requirements such as being at least 20 years old, having lived in Japan for at least five years, having a clean criminal record, being able to support oneself financially, and having a basic knowledge of the Japanese language and culture. There are two types of citizenship in Japan: naturalization and special permanent residency. The naturalization process involves submitting an application, attending an interview, passing a written and oral exam on the Japanese language and culture, and taking an oath of allegiance to Japan. The cost of becoming a Japanese citizen can range from 300,000 yen to 500,000 yen or more depending on legal fees, translation fees, transportation fees, and other related expenses. For those who cannot or do not wish to become naturalized citizens but want to live in Japan permanently, they may be eligible for special permanent residency status.