Thanks for your tips! No intention to break the law, some countries simply don`t allow renouncements to citizenship. The JP government knows that. Naturalization is allowed anyway, although probably they can use that argument as an excuse for refusal. Only the popes of Kasumigaseki can make the final decision. Unfortunately I don`t hang out with them so who knows what they will say. Anyway, coming back top the name issue, I was said today by one of the Homukyouku guys, that there is no way to keep a name with 2 consonants, middle name, H, LL, or any other sound non existing in Japanese. Once in katakana, the romanized version will be its replica. Cash, can you confirm your wife`s name appears as Cash in her JP passport? Sorry for asking again, but that would show things might be getting somewhat flexible. According to what I was said (unofficially), being registered in the koseki with the original and the new name may still give one some chances, but I only heard rumors, no solid info. As for the credit card, I agree, I also have it in romaji, never had nay problems.