Originally Posted by
joejones
In Japan, you have to disclose any foreign nationality you have every time you apply for a passport (there is a space on the application form for this. If you fail to disclose, you have committed a crime. That said, as far as I know, they can't do much if you disclose a foreign nationality as long as you are in compliance with the Japanese Nationality Act.
Yeah, no.

Respectfully I say that is nonsense as it causes anyone over the age of 22 to self-incriminate. And despite Japan's legal; system being messed as absurd as it is, I cannot fathom them trying to get people to self-incriminate. Nationality Law is pretty clear on holding dual nationality after age 22 and when discovered they can force you to give up the other one if they want.
So either the Nationality Law is wrong or this claim to require self-incrimination is wrong, but the two cannot exist as you would not be entitled to a passport one were naturalized elsewhere.