Supplementary Provisions, Article 6Transitional Measures upon Partial Revision of the Family Register Act
第六条（戸籍法の一部改正に伴う経過措置）
The person entered at the head of the family register (referred to below as the "head of the family register") at the time of enforcement of the provisions listed in Article 1, item (iii) of the Supplementary Provisions (excluding a person who has already made a notification under the provisions of this paragraph or the following paragraph) may make a notification regarding the surname kana characters of the surname listed in the family register of the head of the family register, limited to a period within one year from the effective date of item (iii).
If a head of the family register who is allowed to make the notification stated in the preceding paragraph uses a pronunciation other than the pronunciation referred to in Article 13, paragraph (1), item (ii) (referred to below as the "general pronunciation") under the provisions of Article 13, paragraph (2) of the Family Register Act as amended by the provisions of Article 7 (referred to below as the "new Family Register Act") at the time of enforcement of the provisions listed in Article 1, item (iii) of the Supplementary Provisions, the head of the family register may make a notification to the effect that the characters displaying the pronunciation being used are to be particulars entered into the family register in lieu of the notification in the preceding paragraph, limited to within one year from the effective date of item (iii). In this case, in applying the provisions of Article 13, paragraph (1), item (ii), Article 29, item (iv), Article 107, paragraph (1) and Article 107-3 of the new Family Register Act, and other laws and regulations, to the person entered in the family register related to the notification, the characters used in the relevant notification are deemed to be the surname kana characters.
前項の届出をすることができる筆頭者であって、附則第一条第三号に掲げる規定の施行の際現に同項の氏について第七条の規定による改正後の戸籍法（以下「新戸籍法」という。）第十三条第二項の規定による同条第一項第二号の読み方（以下「一般の読み方」という。）以外の氏の読み方を使用しているものは、第三号施行日から起算して一年以内に限り、前項の届出に代えて現に使用している氏の読み方を示す文字を戸籍の記載事項とする旨の届出をすることができる。この場合において、当該届出に係る戸籍に記載されている者に係る新戸籍法第十三条第一項第二号、第二十九条第四号、第百七条第一項及び第百七条の三の規定その他の法令の規定の適用については、当該届出に係る文字を氏の振り仮名とみなす。
If the head of the family register who is allowed to make the notification stated in paragraph (1) is removed from the relevant family register, limited to within one year from the effective date of item (iii), in accordance with the order, the persons listed below may make the notifications referred to in the preceding two paragraphs; provided, however, that this does not apply if the notifications referred to in the preceding two paragraphs have already been made for the relevant family register:
spouse (This excludes persons who have already been removed from the family register);
配偶者（その戸籍から除かれた者を除く。）
child (This excludes persons who have already been removed from the family register).
子（その戸籍から除かれた者を除く。）
The person making the notification referred to in paragraph (2) must submit a document certifying that the pronunciation of the surname that is being used is generally accepted.
第二項の届出をする者は、現に使用している氏の読み方が通用していることを証する書面を提出しなければならない。