If one of the parties to a contract made an agreement with a third party to transfer that party's contractual status to that third party, and the other party to the contract gives consent to the transfer, the contractual status is transferred to the third party.

①If one of the parties has the right to cancel pursuant to the provisions of the contract or the law, the cancellation is effected by manifestation of intention to the other party.

②The manifestation of intention referred to in the preceding paragraph may not be withdrawn.

If one of the parties does not perform that party's obligation, and the other party demands performance of that obligation, specifying a reasonable period of time, but no performance is completed during that period, the other party may cancel the contract; provided, however, that this does not apply if the non-performance of the obligations upon the passage of the period is minor in light of the contract and common sense trading practices.

①In the following cases, the obligee may immediately cancel the contract without making the demand referred to in the preceding Article:

②In the following cases, the obligee may immediately cancel a part of the contract without making the demand referred to in the preceding Article:

If non-performance of an obligation is due to grounds attributable to the obligee, the obligee may not cancel the contract under the preceding two Articles.

①If one party to a contract is comprised of two or more persons, the cancellation of the contract may be effected only by, or against, all of those persons.

②In the case referred to in the preceding paragraph, if the right to cancel is extinguished with respect to one of the persons that constitute a party to the contract, it is also extinguished with respect to the other persons.

①If one of the parties exercises the right to cancel, each party assumes an obligation to restore the other party to that other party's original state; provided, however, that this may not prejudice the rights of a third party.

②In the case referred to in the main clause of the preceding paragraph, if any monies are to be refunded, interest must accrue from the time of the receipt of those monies.

③In the case referred to in the main clause of paragraph (1), if a thing other than money is to be returned, fruits that have accrued on or after the time of the receipt of the thing must also be returned.

④The exercise of the right to cancel does not preclude claims for damages.

The provisions of Article 533 apply mutatis mutandis to the preceding Article.

If no period of time is specified for the exercise of the right to cancel, the other party may issue a notice of demand to the holder of the right to cancel, specifying a reasonable period of time, to the effect that the holder of the right to cancel is to give a definite answer as to whether the holder will cancel or not within that period of time. In this case, if no notice of cancellation is received within that period, the right to cancel is extinguished.

The right to cancel is extinguished if the holder of the right to cancel, intentionally or negligently, causes significant damage to, or makes it impossible to return the object of the contract, or converts the object into another kind of thing by processing or alteration; provided, however, that this does not apply if the holder of the right to cancel does not know of the holder's right to cancel.

①In the following cases, a person making an agreement to conduct a standard transaction (meaning a transaction conducted by a specified person with an unspecified and large number of persons as the counterparties, in which the uniformity of the whole or part of the transaction is reasonable to both parties; the same applies below) (that agreement is referred to as an "agreement on standard transaction" in the following Article) is deemed to have made an agreement on each provisions of the standard terms and conditions(referring to a collection of provisions prepared by that specific person with the purpose of applying them as contract terms for a standard transaction; the same applies below):

②Notwithstanding the provisions of the preceding paragraph, the person is deemed not to have agreed to any provisions referred to in that paragraph that restrict the rights or expand the duties of the counterparty and that are found, in light of the manner and circumstances of the standard transaction as well as common sense trading practices, to unilaterally prejudice the interests of the counterparty in violation of the fundamental principle prescribed in Article 1, paragraph (2).

①A preparer of the standard terms and conditions that conducts or seeks to conduct a standard transaction must disclose the details of the standard terms and conditions by a reasonable method without delay if the counterparty requests this within a reasonable period of time before or after an agreement on standard transaction is made; provided, however, that this does not apply if the preparer has already delivered to the counterparty a document that contains the standard terms and conditions or provided the other party with an electronic or magnetic record that contains the same.

②The provisions of the preceding Article do not apply if the preparer of the standard terms and conditions refuses the request referred to in the preceding paragraph before an agreement on standard transaction is made; provided, however, that this does not apply if a temporary communication failure takes place or the preparer has a legitimate reason to refuse it.

①In the following cases, a preparer of the standard terms and conditions may, by amending the standard terms and conditions, amend the contract terms without making separate agreements with each of the counterparties and deem that the parties have agreed to the amended provisions of the standard terms and conditions:

②If a preparer of the standard terms and conditions is to amend the standard terms and conditions under the provisions of the preceding paragraph, the preparer must specify the time when the amendment takes effect, and make amendments to the standard terms and conditions, the details of the amended standard terms and conditions, and the time when the amendment takes place known to the public by an appropriate method such as using the internet.

③An amendment to the standard terms and conditions under the provisions of paragraph (1), item (ii) does not become effective unless it is made known to the public pursuant to the provisions of that paragraph by the time when the amendment takes effect referred to in the preceding paragraph.

④The provisions of Article 548-2, paragraph (2) do not apply to an amendment to the standard terms and conditions under the provisions of paragraph (1).