Supplementary Provisions, Article 4
第四条
A provisional certificate of residence prepared under the provisions of the preceding Article is to become a certificate of residence as of the item (i) effective date.
When, with regard to the certificate of residence of a person who has Japanese nationality and belongs to the same household as a foreign resident pertaining to the certificate of residence set forth in the preceding paragraph, a change has occurred in the matters listed in Article 7, item (iv) of the new Act in connection with the preparation of the certificate of residence set forth in that paragraph, the mayor of the municipality must effect the amendment of an entry as of the item (i) effective date.
The mayor of a municipality that prepares a certificate of residence on a household basis under the provisions of Article 6, paragraph (2) of the new Act may, with regard to a household to which a foreign resident and a person who has Japanese nationality belong, notwithstanding the provisions of paragraph (1) and paragraph (2) of the same Article, and only for the period necessary, on or after the item (i) effective date, to make an entry for the foreign resident in the certificate of residence on a household basis, substitute the preparation of the basic resident register, by organizing the certificate of residence set forth in paragraph (1) on an individual basis and the certificate of residence pertaining to the person who has Japanese nationality on a household basis, by household, for the preparation of a certificate of residence on a household basis.