No action for demand for revocation of fraudulent act may be filed if two years have passed from the time when the obligee came to know that the obligor committed the act knowing that it would be prejudicial to the obligee. The same applies if 10 years have passed from the time of the act.

If there are more than one obligee or obligor, unless a particular intention is manifested, each obligee or each obligor has rights or obligations in equal ratios.

The provisions of the following Subsection (Joint and Several Claims) (excluding the provisions of Articles 433 and 435) apply mutatis mutandis if the subject of a claim is indivisible by nature and the claim is held by two or more obligees.

Even if there is a novation or release between one of the obligees of an indivisible claim and the obligor, other obligees may request the obligor to perform the obligation in whole. In such a case, the benefit which should have been allocated to that one obligee if that obligee did not lose the relevant right must be reimbursed to the obligor.

The provisions of Subsection 4 (Joint and Several Obligation) (excluding the provisions of Article 440) apply mutatis mutandis if the subject of an obligation is indivisible by nature and there are multiple obligors.

If an indivisible claim becomes a divisible claim, each obligee may request the performance only of the share of the claim to which each obligee is entitled, and if an indivisible obligation becomes a divisible obligation, each obligor is liable only for the share of the obligation for which each obligor is liable.

If the subject of a claim is divisible by nature, and two or more persons hold the claim jointly and severally based on the provisions of laws and regulations or the manifestation of intention of the parties, each obligee may request the performance in whole or in part for the benefit of all obligees, and the obligor may perform for each obligee for the benefit of all obligees.

If there is a novation or release between one of the joint and several obligees and the obligor, the other obligees may not request performance of the part concerning the benefit which should have been allocated to that one obligee if the obligee did not lose the relevant right.

If the obligor has a claim against one of the joint and several obligees, and the obligor invokes a set-off, the set-off becomes effective against other joint and several obligees as well.

If there is a merger between one of the joint and several obligees and the obligor, the obligor is deemed to have performed the obligation.

Except in cases prescribed in Article 432 through the preceding Article, any act of one of the joint and several obligees or any circumstances which have arisen with respect to one of the joint and several obligees do not become effective in relation to other joint and several obligees; provided, however, that if one of the other joint and several obligees and the obligor manifest a particular intention, their intention prevails with respect to the effect in relation to the remaining other joint and several obligees.

If the subject of an obligation is indivisible by nature, and two or more persons bear the obligation jointly and severally based on the provisions of laws and regulations or the manifestation of intention of the parties, the obligee may request one of the joint and several obligors, or all of the joint and several obligors, simultaneously or successively, to perform the obligation, in whole or in part.

Even if there are grounds for the invalidity or rescission of a juridical act with respect to one of the joint and several obligors, the validity of the obligation of other joint and several obligor is not impaired.

If novation takes place between one of the joint and several obligors and the obligee, the claim is extinguished for the benefit of all joint and several obligors.

①If one of the joint and several obligors has a claim against the obligee and invokes a set-off, the claim is extinguished for the benefit of all joint and several obligors.

②Until the joint and several obligor that has the claim referred to in the preceding paragraph invokes a set-off, other joint and several obligors may refuse to perform the obligation to the obligee only to the extent of that joint and several obligor's share of the obligation.

If there is a merger between one of the joint and several obligors and the obligee, the joint and several obligor is deemed to have performed the obligation.

Except in cases prescribed in Articles 438, Article 439, paragraph (1), and the preceding Article, any circumstances which have arisen with respect to one of the joint and several obligors is not effective in relation to other joint and several obligors; provided, however, that if the obligee and one of the other joint and several obligors manifest a different intention, their intention prevails with respect to the effect in relation to the remaining other joint and several obligees.

①If one of the joint and several obligors performs the obligation or otherwise obtain a common discharge in exchange for that obligor's own property, the joint and several obligor has the right to reimbursement from other joint and several obligors for the amounts in proportion to their respective shares of the obligation of the amount of the property expended by the joint and several obligor in order to obtain the discharge (if the amount of property exceeds the amount after the common discharge, the amount thus discharged), regardless of whether the amount discharged exceeds the amount of the joint and several obligor's own share.

②The reimbursement under the provisions of the preceding paragraph includes the compensation of the statutory interest which accrues on or after the day of the performance of the obligation or other discharge, and the compensation for unavoidable expenses and other loss or damage.

①If one of the joint and several obligors performs the obligation or otherwise obtains a common discharge in exchange for that obligor's own property, while knowing the existence of other joint and several obligors but without giving notice of the common discharge to the other joint and several obligors, another joint and several obligor has a defense that may be duly asserted against the obligee, the other joint and several obligor may duly assert that defense against the joint and several obligor that obtained the discharge to the extent of the other obligor's share of the obligation. In such a case, if the other joint and several obligor duly asserts a set-off as defense against the joint and several obligor that obtained the discharge, the joint and several obligor may request the obligee to perform the obligation which should have been extinguished due to set-off.

②If one of the joint and several obligors that has performed the obligation or otherwise obtained a common discharge in exchange for that obligor's own property, while knowing the existence of other joint and several obligors, fails to give notice of the acquisition of the discharge to the other joint and several obligors, and as a result, another joint and several obligor performs the obligation or performs another act in good faith to obtain discharge in exchange for that obligor's own property, the other joint and several obligor may deem that the act performed to obtain the discharge is valid.

①If one of the joint and several obligors does not have the sufficient financial resources to make the reimbursement, the portion that is unable to be reimbursed is borne by the joint and several obligor that demands the reimbursement and the other joint and several obligors that have the financial resources, in proportion to their respective shares of the obligation.

②In the case prescribed in the preceding paragraph, if neither the joint and several obligor that demands the reimbursement nor the other obligors that have the financial resources have shares of the obligation, the portion that is unable to be reimbursed is borne equally among the joint and several obligor that demands the reimbursement and the other obligors that have the financial resources.

③Notwithstanding the provisions of the preceding two paragraphs, if the joint and several obligor that demands the reimbursement is unable to receive the reimbursement due to negligence, that joint and several obligor may not request other joint and several obligors to bear their respective shares of the obligation.

Even if one of the joint and several obligors is released from the obligation or the prescription period expires for one of the joint and several obligors, other joint and several obligors may exercise the right to reimbursement referred to in Article 442, paragraph (1) against that one joint and several obligor.

①A guarantor has the responsibility to perform the obligation of the principal obligor when the latter fails to perform that obligation.

②No guarantee contract becomes effective unless it is made in writing.

③If a guarantee contract is concluded by electronic or magnetic record which records its terms, the guarantee contract is deemed to be made in writing, and the provisions of the preceding paragraph apply.

①The guarantee obligation includes interest, penalty and damages in connection with the principal obligation, and all other charges secondary to that obligation.

②A guarantor may stipulate the amount of penalty or damages with regard to the guarantor's own guarantee obligation only.

①If the burden of a guarantor is more onerous than the principal obligation as to either its subject or terms, it is reduced to the extent of the principal obligation.

②Even if the subject or terms of the principal obligation are made more onerous after the conclusion of a guarantee contract, the burden of the guarantor remains unchanged.

If a guarantor that guarantees an obligation which may be revocable due to the principal obligor's limited capacity to act, is aware, at the time of entering into a guarantee contract, of the cause for its revocability, that guarantor is presumed to have assumed an independent obligation of the same subject in the event of non-performance by the principal obligor or revocation of the obligation.

①If an obligor has the obligation to provide a guarantor, that guarantor must:

②If the guarantor ceases to meet the requirements stated in item (ii) of the preceding paragraph, the obligee may demand that some other person meeting the requirements stated in any item of the same paragraph be substituted for that guarantor.

③The provisions of the preceding two paragraphs do not apply if the obligee has designated the guarantor.

If an obligor is unable to provide a guarantor meeting the requirements stated in any item of paragraph (1) of the preceding Article, the obligor may provide other security in lieu of the guarantor.

If an obligee has requested performance of an obligation from the guarantor, the guarantor may request the obligee to demand performance of the principal obligor first; provided, however, that this does not apply if the principal obligor is subject to an order commencing bankruptcy proceeding or if the principal obligor's whereabouts are unknown.

Even after the obligee has made a demand to the principal obligor in accordance with the provisions of the preceding Article, the obligee must first execute on the property of the principal obligor if the guarantor proves that the principal obligor has the financial resources to pay the obligation and that the execution can be easily performed.

If a guarantor has assumed an obligation jointly and severally with the principal obligor, the guarantor does not have the rights set forth in the preceding two Articles.