Supplementary Provisions, Article 12
第十二条
A person for whom the given name kana characters have been entered into a family register pursuant to the provisions of Article 9, paragraph (2) of the Supplementary Provisions (excluding a person who has already made the notification under the provisions of this paragraph or the following paragraph; the same applies in that paragraph) may make a notification to change the given name kana characters.
A person for whom the given name kana characters have been entered into a family register pursuant to the provisions of Article 9, paragraph (2) of the Supplementary Provisions and who uses a pronunciation other than the general pronunciation for the given name at the time of enforcement of the provisions set forth in Article 1, item (iii) of the Supplementary Provisions may make a notification to the effect that the particulars entered in the family register be changed to the characters displaying the pronunciation of the given name that is being used. In this case, in applying the provisions of Article 13, paragraph (1), item (ii), Article 29, item (iv), Article 107-2 and Article 107-4 of the new Family Register Act, and other laws and regulations, to the person that changed the particulars entered in the family register through the notification, the characters used in the relevant notification are deemed to be the given name kana characters.
A person for whom characters displaying a pronunciation of the given name other than the general pronunciation have been entered into a family register pursuant to the provisions of Article 9, paragraph (3) of the Supplementary Provisions (excluding a person who has already made the notification under the provisions of this paragraph or the following paragraph; the same applies in that paragraph) may make a notification to the effect that the particulars entered in the family register be changed to the given name kana characters according to the general pronunciation.
A person for whom characters displaying a pronunciation of the given name other than the general pronunciation are entered in the family register pursuant to the provisions of Article 9, paragraph (3) of the Supplementary Provisions and who is using, at the time of enforcement of the provisions set forth in Article 1, item (iii) of the Supplementary Provisions, a pronunciation of the given name that differs from the pronunciation entered into the family register and that is a pronunciation other than the general pronunciation, may make a notification to the effect that the particulars entered in the family register be changed to the characters displaying the pronunciation of the given name that is being used. In this case, in applying the provisions of Article 13, paragraph (1), item (ii), Article 29, item (iv), Article 107-2 and Article 107-4 of the new Family Register Act, and other laws and regulations, to the person that changed the characters displaying the pronunciation of the given name through the notification, the characters used in the relevant notification are deemed to be the given name kana characters.
The provisions of Article 107-4 of the new Family Register Act do not apply to the notifications in the preceding paragraphs.
新戸籍法第百七条の四の規定は、前各項の届出には、適用しない。
The person making the notification referred to in paragraph (2) or (4) must submit a document certifying that the pronunciation of the given name that is being used in that notification is generally accepted.