Japanese naturalisation for baby

Sorry for another naturalisation post but I think this case is a pretty unique one – appreciate any info from the wisdom of this forum.

The case:

– Son born 3 months ago.
– Mother’s naturalisation to Japanese from a country that does not allow to relinquish citizenship 2.5 months ago – i.e. mum was Argentine when baby was born, then became accepted as a Japanese citizen 2 weeks later after birth (diabolical bad luck with the timing, I know). Mum is now Japanese.
– Father is British.
– Son is therefore also British and not duel-nationality with Japanese by birth-rite by 2 weeks bad luck. We want to apply for Japanese citizenship for son like his mum.

As we know, children born to Japanese citizens are allowed to maintain both nationalities until age 20 and make an informed decision themselves as adults as to which nationality they choose.

The question: Will this rule also apply to our son if we apply for his Japanese citizenship like his mother, or will they force us now to decide on his behalf with him aged less than 1 year old, whether he is British like his father or Japanese like his mother? It feels immoral to decide this big thing on behalf of someone who can’t speak or walk. MOJ can’t give us a clear answer on this point (maybe because the case is so unique here with a mum turning Japanese two weeks after baby is born.)

Worst case guess our son will have to be British with only PR, but we of course want him to have the same nationality as his mum if possible and also with the potential Japan might be his home forever. Who knows.

Appreciate any insight.

2 comments
  1. If your child was not born with a Japanese parent, they will need to naturalize.

    Thankfully, as they are (now) a child of a Japanese national, they qualify for a simplified procedure.

    However, as they are still naturalizing, the requirement to relinquish other citizenships will still come into effect.

    Sadly, it is very unfortunate timing.

  2. With these kind of question to get accurate answer. You should consult an immigration specialist.

    But if it’s not possible to have both, it might be better to wait for years to see how your son grows, will he be speaking English well? Will your marriage last? If he goes international school and he’s good with English or your marriage falters. May be leave him British until he’s old enough to decide.

    If not, then might be better to apply on his behalf, after all I read it’s easy for former British citizens to restore their citizenship.

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