This Act comes into effect as of the date specified by Cabinet Order within a period not exceeding 1 year from the date of promulgation.

Except as otherwise provided for in these Supplementary Provisions, the provisions as amended by this Act also apply to matters that arose before this Act comes into effect; provided, however, that this does not preclude the effect that has arisen under the provisions prior to amendment by this Act.

With regard to standing to be sued in actions for the judicial review of an administrative disposition (meaning actions for the judicial review of an administrative disposition prescribed in Article 3, paragraph (1) of the Administrative Case Litigation Act as amended by this Act (hereinafter referred to as "the new Act")), and in those citizen actions (meaning citizen actions prescribed in Article 5 of the new Act) and interagency actions (meaning interagency actions prescribed in Article 6 of the new Act) that seek the revocation or the declaration of nullity of an original administrative disposition (meaning an original administrative disposition prescribed in Article 3, paragraph (2) of the new Act; the same applies hereinafter) or an administrative determination (meaning an administrative determination prescribed in paragraph (3) of that Article; the same applies hereinafter), that are pending at the time this Act comes into effect, the provisions then in force continue to govern, notwithstanding the provisions of Article 11, Article 23, paragraph (1), and Article 33, paragraph (1) of the new Act (including as applied mutatis mutandis pursuant to Article 38, paragraph (1) of the new Act (including as applied mutatis mutandis pursuant to Article 43, paragraph (2) of the new Act) or Article 43, paragraph (1) of the new Act), and of Article 19-14, paragraph (1) of the Local Tax Act (Act No. 226 of 1950) as amended by Article 18 of the Supplementary Provisions, Article 116, paragraph (1) of the Act on General Rules for National Taxes (Act No. 66 of 1962) as amended by Article 36 of the Supplementary Provisions, Article 23 of the Supplementary Provisions of the Tobacco Business Act (Act No. 68 of 1984) as amended by Article 43 of the Supplementary Provisions, and Article 34 of the Supplementary Provisions of the Salt Industry Act (Act No. 39 of 1996) as amended by Article 44 of the Supplementary Provisions.

With regard to the statute of limitations for filing an action concerning an original administrative disposition or administrative determination for which that period expired before this Act comes into effect, the provisions then in force continue to govern.

The provisions of Article 46 of the new Act do not apply to an original administrative disposition or administrative determination made before this Act comes into effect.

In the case where five years have passed after this Act comes into effect, the Government is to review the status of enforcement of the new Act and, if it finds it necessary, is to take the required measures based on the results.