Hello! I’m Japanese with a Portuguese spouse living in Europe, and we are expecting our first baby soon. We are not planning to move to Japan anytime soon, but it might happen later or our kids would want to move there at some point.
When we got married, we chose to keep our surnames separated. So our baby will have different surnames in each passport. The Japanese one will have my surname only, but the Portuguese one can have my spouse’s surnames + mine most likely.
For first names, we are thinking of a Japanese name and a Portuguese name. In Portugal, they don’t have middle name system but people can have multiple first names and surnames. What I’m wondering is, whether I should register the two first names, or just the Japanese one in Japan?
For example, if the first names are Hanako Maria, in Japanese documents (koseki, My number card or bank stuff) will she be 花子マリア with yomigana はなこまりあ? Like no spacing in between?
And in the JP passport, will it be Hanako Maria with spacing? Or does it need to be Hanakomaria?
I’m more inclined to register only the Japanese name for koseki and JP passport, but would like to know the consequences and any benefits of having the other first name.
Hope this question is not far-fetched for this sub. Thanks for the help!
by tropicalbird05