This Act comes into effect on the day on which 20 days have elapsed from the day of promulgation; provided, however, that the provisions listed in the following items come into effect on the date specified in the relevant item.

①A person who made a prior notification (meaning the act of notification, made before the day this Act comes into effect (hereinafter referred to as "the effective date") under the provision of Article 3, paragraph (1) of the Nationality Act prior to the revision by this Act, pertaining to the acquisition of Japanese nationality by a child acknowledged by the father or mother who does not fall under a child who acquired the status of a child in wedlock through the marriage of the father and mother and the acknowledgment prescribed in that paragraph; the same applies hereinafter), who, at the time of that prior notification, would have fallen under the requirements prescribed in Article 3, paragraph (1) of the Nationality Act as revised by this Act (referred to as "the new Act" in Article 4, paragraph (1) of the Supplementary Provisions) if that paragraph were applied (excluding the requirement of giving notification to the Minister of Justice; the same applies in Article 4, paragraph (1) of the Supplementary Provisions) (excluding a person who was formerly a Japanese national), may, only within three years from the effective date, acquire Japanese nationality by giving notification to the Minister of Justice.

②Where the person seeking to acquire nationality is under 15 years of age, the notification under the preceding paragraph is made by his or her legal representative on his or her behalf.

③A person who made a notification under paragraph (1) acquires Japanese nationality at the time of that notification; provided, however, that if the prior notification was made on or after January 1, 2003, that person acquires Japanese nationality retroactively as of the time of that prior notification.

①With respect to a person who made a prior notification on or after June 5, 2008, except in the case where that person has indicated a contrary intention to the Minister of Justice, that person is deemed to have made a notification under paragraph (1) of the preceding Article on the effective date, and the provisions of that paragraph and the proviso to paragraph (3) of that Article apply.

②The indication of a contrary intention prescribed in the preceding paragraph must be made before the effective date.

①In addition to a case under Article 2, paragraph (1) of the Supplementary Provisions, a child acknowledged by his or her father or mother, who, during the period from January 1, 2003, to the day before the effective date, would have fallen under the requirements prescribed in Article 3, paragraph (1) of the new Act if that paragraph were applied (excluding a person who was formerly a Japanese national and a person who is able to make a notification under that paragraph), may, if his or her father or mother is presently a Japanese national or was a Japanese national at the time of death, acquire Japanese nationality by giving notification to the Minister of Justice, only within three years from the effective date.

②A person who made a notification under the preceding paragraph acquires Japanese nationality at the time of that notification.

①Where the father or mother has acquired Japanese nationality under Article 2, paragraph (1) of the Supplementary Provisions (excluding a case where the proviso to paragraph (3) of that Article applies), a child born on or after the time of the prior notification made by that father or mother and before the time that father or mother acquired Japanese nationality (excluding a person who was formerly a Japanese national) may acquire Japanese nationality by giving notification to the Minister of Justice, only within three years from the effective date; provided, however, that this does not apply where that father or mother is an adoptive parent, or is a person who made the acknowledgment after the birth.

②A person who made a notification under the preceding paragraph acquires Japanese nationality at the time of that notification.

③The provision of Article 2, paragraph (2) of the Supplementary Provisions applies mutatis mutandis to a notification under paragraph (1).

Where a person intending to make a notification under Article 2, paragraph (1), Article 4, paragraph (1), or paragraph (1) of the preceding Article is unable to give the notification within the period prescribed in those provisions due to a natural disaster or other grounds not attributable to that person, the period for that notification is three months from the time it becomes possible to make it.

For the purpose of the application of Article 14, paragraph (1) of the Nationality Act in the case where a person who has a foreign nationality has acquired Japanese nationality under Article 2, paragraph (1) of the Supplementary Provisions (limited to a case where the proviso to paragraph (3) of that Article applies), that person is deemed to have come to have a foreign nationality and Japanese nationality at the time of the notification under Article 2, paragraph (1) of the Supplementary Provisions (or, in a case where that notification is deemed to have been made under Article 3, paragraph (1) of the Supplementary Provisions, on the effective date).

The provision of Article 102 of the Family Register Act (Act No. 224 of 1947) applies mutatis mutandis to a notification of acquisition of nationality in the case of acquiring Japanese nationality under Article 2, paragraph (1), Article 4, paragraph (1), or Article 5, paragraph (1) of the Supplementary Provisions. In this case, the term "the day of that acquisition" in Article 102, paragraph (1) of that Act is deemed to be replaced with "the day of that acquisition (in a case where the proviso to Article 2, paragraph (3) of the Supplementary Provisions to the Act Partially Amending the Nationality Act (Act No. 88 of 2008) applies, the day of the notification under paragraph (1) of that Article (or, in a case where that notification is deemed to have been made under Article 3, paragraph (1) of the Supplementary Provisions to that Act, the day that Act comes into effect))".

For the purpose of the application of Article 104 of the Family Register Act in the case where, because the father or mother has acquired Japanese nationality retroactively as of the time of the prior notification through the application of Article 2, paragraph (1) and the proviso to paragraph (3) of the Supplementary Provisions, a child born on or after the time that father or mother acquired Japanese nationality and before the time of the notification under paragraph (1) of that Article comes to be subject to the application of Article 2 and Article 12 of the Nationality Act, the term "the day of birth" in Article 104, paragraph (1) of the Family Register Act is deemed to be "the day of the notification under Article 2, paragraph (1) of the Supplementary Provisions to the Act Partially Amending the Nationality Act (Act No. 88 of 2008) made by the father or mother (or, in a case where that notification is deemed to have been made under Article 3, paragraph (1) of the Supplementary Provisions to that Act, the day that Act comes into effect)".

The procedure for notification under Article 2, paragraph (1), Article 4, paragraph (1), and Article 5, paragraph (1) of the Supplementary Provisions, and other matters necessary for the enforcement of this Act, are specified by Ministry of Justice Order.

①A person who makes a false notification when giving notification under Article 2, paragraph (1), Article 4, paragraph (1), or Article 5, paragraph (1) of the Supplementary Provisions is punished by imprisonment for not more than one year or a fine of not more than 200,000 yen.

②The crime under the preceding paragraph is governed by the rule under Article 2 of the Penal Code (Act No. 45 of 1907).