①When permitting naturalization, the Minister of Justice must provide a public notice to that effect in the Official Gazette.

②Naturalization becomes effective as of the date of the public notice stated in the preceding paragraph.

①When a Japanese citizen acquires the nationality of a foreign country at their own choice, that Japanese citizen loses Japanese citizenship.

②A Japanese citizen having the nationality of a foreign country loses Japanese citizenship when they select the nationality of that foreign country according to its laws and regulations.

A Japanese citizen who acquired the nationality of a foreign country by birth and who was born abroad loses Japanese citizenship retroactive to the time of birth unless they indicate an intention to reserve Japanese citizenship pursuant to the provisions of the Family Register Act (Act No. 224 of 1947).

①A Japanese citizen having foreign nationality may renounce Japanese citizenship by notification to the Minister of Justice.

②The person making the notification pursuant to the provisions stated in the preceding paragraph loses Japanese citizenship at the time of the notification.

①A Japanese citizen having a foreign nationality must select either one of the two before reaching twenty years of age if they obtain the foreign nationality and Japanese citizenship prior to becoming eighteen years of age, or within two years from that time if it is after.

②Other than by renouncing the foreign nationality, the selection of Japanese citizenship is accomplished by making a declaration of the Japanese citizenship selection and the renunciation of the foreign nationality (referred to below as "selection declaration") pursuant to the provisions of the Family Register Act.

①The Minister of Justice may make a written demand to any Japanese citizen having a foreign nationality, who has not selected Japanese citizenship within the prescribed time period as provided in the preceding Article, paragraph (1), that either selection must be made.

②The demand prescribed in the preceding paragraph may be made by publishing the matters demanded in the Official Gazette, if the location of the intended recipient is unknown or otherwise it cannot be accomplished by sending documents due to unavoidable circumstances. In these cases, the demand is deemed to have arrived on the day after the publication in the Official Gazette.

③The recipient of the demand made pursuant to the provisions of the preceding two paragraphs loses Japanese citizenship if the selection is not made within one month of receiving the demand upon expiration of the time period; provided, however, that this does not apply if the recipient is unable to select Japanese citizenship within the time period due to a natural disaster or other circumstances beyond the recipient's control, and the selection is made within two weeks of the time when the ability to make the selection is regained.

①A Japanese citizen who makes the selection declaration must try to renounce their foreign nationality.

②If a Japanese citizen having made the selection declaration and not having lost foreign nationality assumes the post of a government employee of that foreign country (with the exception of a post that may be assumed by a person not having the nationality of that country) on their own will, the Minister of Justice may pronounce loss of Japanese citizenship against the person if it is found that the assumption of the post is directly contrary to the gist of the selection of Japanese citizenship.

③The proceedings on the date of the hearing pertaining to the pronouncement stated in the preceding paragraph must be conducted open to the public.

④The pronouncement stated in paragraph (2) must be made by placing a public notice in the Official Gazette.

⑤The person subjected to the pronouncement stated in paragraph (2) loses Japanese citizenship as of the day of the public notice stated in the preceding paragraph.

①A person who has lost Japanese citizenship pursuant to the provisions of Article 12 and is under eighteen years of age may acquire Japanese citizenship by notification to the Minister of Justice while domiciled in Japan.

②A person who receives the demand pursuant to the provisions of Article 15, paragraph (2) and loses Japanese citizenship pursuant to the provisions of paragraph (3) of that Article may acquire Japanese citizenship if they meet the conditions listed in Article 5, paragraph (1), item (v) by notification to the Minister of Justice within one year from the date of knowing the loss of Japanese citizenship; provided, however, that if notification cannot be made within that time period due to a natural disaster or other circumstances beyond the person's control, that time period is one month from the time when the ability to make the notification is regained.

③The person making notification pursuant to the provisions of the preceding two paragraphs acquires Japanese citizenship at the time of the notification.

The notification of acquisition of citizenship pursuant to the provisions in Article 3, paragraph (1) or paragraph (1) of the preceding Article, application for naturalization permission, selection declaration, or notification of citizenship renouncement is made by a legal representative if the person acquiring nationality, making selection, or renouncing is under fifteen years of age.

The provisions of Article 36-3 of the Administrative Procedure Act (Act No. 88 of 1993) do not apply to a demand pursuant to the provisions of Article 15, paragraph (1).

Procedures relating to acquisition and renouncement of citizenship as well as other required matters in effectuating this Act, not provided in this Act, are prescribed by Ministry of Justice Order.

①Regarding notification provided pursuant to the provisions of Article 3, paragraph (1), a person making a false notification is punishable by not more than one year of imprisonment or a fine of not more than two hundred thousand yen.

②The offense stated in the preceding paragraph is governed by the Penal Code (Act No. 45 of 1907), Article 2.