With regard to the right to demand revocation of a fraudulent act relating to an act in the case where, before the Effective Date, an obligor performed a juridical act knowing that it would prejudice an obligee, as prescribed in Article 424, paragraph (1) of the Former Act, the provisions then in force continue to govern.

①With regard to an indivisible claim prescribed in Article 428 of the Former Act that arose before the Effective Date (including one for which the juridical act that is its cause was performed before the Effective Date), the provisions then in force continue to govern.

②With regard to an indivisible obligation prescribed in Article 430 of the Former Act and a joint and several obligation prescribed in Article 432 of the Former Act that arose before the Effective Date (including those for which the juridical act that is their cause was performed before the Effective Date), the provisions then in force continue to govern.

③The provisions of Articles 432 through 435-2 of the New Act do not apply to a claim prescribed in Article 432 of the New Act that arose before the Effective Date (including one for which the juridical act that is its cause was performed before the Effective Date).

①With regard to a guarantee obligation relating to a guarantee contract concluded before the Effective Date, the provisions then in force continue to govern.

②A person intending to become a guarantor may, even before the Effective Date, request the preparation of the notarial instrument referred to in Article 465-6, paragraph (1) of the New Act (including as applied mutatis mutandis pursuant to Article 465-8, paragraph (1) of the New Act).

③If a request for the preparation of a notarial instrument has been made pursuant to the provisions of the preceding paragraph, a notary may, even before the Effective Date, prepare it in accordance with the provisions of Article 465-6, paragraph (2) and Article 465-7 of the New Act (including as applied mutatis mutandis pursuant to Article 465-8, paragraph (1) of the New Act).

With regard to the assignment of a claim in the case where the juridical act that is the cause of the assignment of the claim was performed before the Effective Date, notwithstanding the provisions of Articles 466 through 469 of the New Act, the provisions then in force continue to govern.

The provisions of Articles 470 through 472-4 of the New Act do not apply to a contract concerning the assumption of an obligation concluded before the Effective Date.

With regard to a registered claim payable to holder prescribed in Article 471 of the Former Act that arose before the Effective Date (including one for which the juridical act that is its cause was performed before the Effective Date), the provisions then in force continue to govern.

①With regard to the performance of an obligation in the case where the obligation arose before the Effective Date, beyond what is prescribed in the following paragraph, the provisions then in force continue to govern.

②With regard to the appropriation of performance in the case where the performance was made before the Effective Date, notwithstanding the provisions of Articles 488 through 491 of the New Act, the provisions then in force continue to govern.

①With regard to a manifestation of intention prescribed in Article 505, paragraph (2) of the Former Act that was made before the Effective Date, the provisions then in force continue to govern.

②With regard to a set-off in which a claim that arose before the Effective Date is the passive set-off claim, notwithstanding the provisions of Article 509 of the New Act, the provisions then in force continue to govern.

③With regard to a set-off in which a claim that arose on the basis of a cause existing before the Effective Date is the claim used to assert set-off (limited to one in which a claim that has been attached is the passive set-off claim), notwithstanding the provisions of Article 511 of the New Act, the provisions then in force continue to govern.

④With regard to the appropriation of a set-off in the case where the manifestation of intention to effect the set-off was made before the Effective Date, notwithstanding the provisions of Articles 512 and 512-2 of the New Act, the provisions then in force continue to govern.

With regard to a novation for which a contract of novation prescribed in Article 513 of the Former Act was concluded before the Effective Date, the provisions then in force continue to govern.

The provisions of Articles 520-2 through 520-20 of the New Act do not apply to an instrument issued before the Effective Date.

①With regard to an offer of a contract made before the Effective Date and the acceptance of that offer, the provisions then in force continue to govern.

②With regard to an offer of a contract for which notice was issued before the Effective Date, notwithstanding the provisions of Article 526 of the New Act, the provisions then in force continue to govern.

③With regard to an offer of reward to the public made before the Effective Date, notwithstanding the provisions of Articles 529 through 530 of the New Act, the provisions then in force continue to govern.

①With regard to the defense of simultaneous performance and the bearing of risk relating to a contract concluded before the Effective Date, the provisions then in force continue to govern.

②The provisions of Article 537, paragraph (2) and Article 538, paragraph (2) of the New Act do not apply to a third party beneficiary contract concluded before the Effective Date.

The provisions of Article 539-2 of the New Act do not apply to an agreement to the effect that contractual status is to be transferred that was made before the Effective Date.

With regard to the cancellation of a contract in the case where the contract was concluded before the Effective Date, notwithstanding the provisions of Articles 541 through 543, Article 545, paragraph (3), and Article 548 of the New Act, the provisions then in force continue to govern.

①The provisions of Articles 548-2 through 548-4 of the New Act also apply to a contract relating to a standard transaction (meaning a standard transaction prescribed in Article 548-2, paragraph (1) of the New Act) concluded before the Effective Date; provided, however, that this does not preclude an effect that arose under the provisions of the Former Act.

②The provisions of the preceding paragraph do not apply if a contrary intention is manifested in writing by one of the parties to the contract prescribed in that paragraph (excluding a person that is currently able to exercise the right to cancel under the contract or the provisions of an Act) (including the case where it is manifested by means of an electronic or magnetic record that records its content).

③The manifestation of contrary intention prescribed in the preceding paragraph must be made prior to the Effective Date.

①With regard to the respective contracts of gift, sale and purchase, loan for consumption (including the preliminary contract for a loan for consumption prescribed in Article 589 of the Former Act), loan for use, lease, employment, contract for work, mandate, deposit, or partnership, in the case where any of those contracts was concluded before the Effective Date, and with regard to those contracts and any buy-back or other special agreement ancillary to those contracts, the provisions then in force continue to govern.

②Notwithstanding the provisions of the preceding paragraph, the provisions of Article 604, paragraph (2) of the New Act also apply where a lease contract was concluded before the Effective Date and an agreement relating to the renewal of that contract is made on or after the Effective Date.

③Notwithstanding the provisions of paragraph (1), the provisions of Article 605-4 of the New Act also apply where a lease contract for immovables was concluded before the Effective Date and, on or after the Effective Date, a third party disturbs the possession of those immovables or a third party is in possession of those immovables.

①With regard to the restriction on the period in the case where the period prescribed in the second sentence of Article 724 of the Former Act (including as applied mutatis mutandis pursuant to Article 934, paragraph (3) of the Former Act (including as applied mutatis mutandis pursuant to Article 936, paragraph (3), Article 947, paragraph (3), Article 950, paragraph (2), and Article 957, paragraph (2) of the Former Act)) had already elapsed at the time of the enforcement of this Act, the provisions then in force continue to govern.

②The provisions of Article 724-2 of the New Act do not apply where the prescription prescribed in the first sentence of Article 724 of the Former Act for a claim for damages by tort had already been completed at the time of the enforcement of this Act.

With regard to the remuneration of a person who became an executor before the Effective Date, notwithstanding the provisions of Article 648, paragraph (3) and Article 648-2 of the New Act as applied mutatis mutandis pursuant to Article 1018, paragraph (2) of the New Act, the provisions then in force continue to govern.

Beyond what is provided for in these Supplementary Provisions, transitional measures necessary in connection with the enforcement of this Act are specified by Cabinet Order.