Based on the U.S. Department of State's guidelines, while there isn't a specific certification mandated for translators, individuals translating the document must be competent to translate from Japanese to English. They need to provide a signed statement affirming that the translation is accurate and complete, and that they are qualified to translate from Japanese to English.

According to the U.S. Department of State, translated documents should be accompanied by a statement from the translator or translation company asserting their competence in both the original language (Japanese) and English, as well as the fidelity of their translation. The U.S., unlike some other countries, doesn't usually demand notarization of translations. As for the authentication of Japanese documents, Japan is a member of the Hague Apostille Convention; therefore, an apostille might be necessary to authenticate Japanese documents for use in the U.S.

Do note that this guide is a general overview. For personalized and comprehensive advice related to specific circumstances, it's always recommended to consult directly with the U.S. Embassy in Japan or immigration professionals.