Instruct: Given a legal statement, retrieve articles that support it.
Query: 
Even if the parties specify the term of a lease, the lessor may request to terminate it at any time if he/she reserves the right to terminate during that period.


Article 618
Even if the parties specify the term of a lease, the provisions of the preceding Article apply mutatis mutandis if one party reserves, or both parties reserve, the right to terminate during that period.
Article 617
(1) If the parties do not specify the term of a lease, either party may give a notice of termination at any time. In such cases, a lease as set forth in one of the following items terminates when the term prescribed in that item has passed after the day of the notice of termination:
(i) leases of land: one year;
(ii) leases of buildings: three months; and
(iii) leases of movables and party room: one day.
(2) With respect to leases of land with harvest seasons, the notice of termination must be given after the end of that season and before the next start of cultivation..


Article 547
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..


Article 268 (1) If the duration of superficies is not fixed by the act that established the same and there are no relevant customs, the superficiary may waive that right at any time; provided, however, that if rent must be paid, the superficiary must give notice one year or more in advance or pay rent for one year that has not yet become due and payable.


Article 613 (3) If the lessee lawfully subleases a leased thing, the lessor may not duly assert against the sublessee the cancellation by agreement of the lease with the lessee; provided, however, that this does not apply if, at the time of the cancellation, the lessor has a right to cancel due to non-performance on the part of the lessee.


Article 296
A holder of a right of retention may exercise that holder's rights against the whole of the thing retained until the relevant claim is satisfied in its entirety.
Article 301
An obligor may demand that a right of retention be terminated by providing a reasonable security.
Article 350
The provisions of Articles 296 through 300 and those of Article 304
apply mutatis mutandis to pledges..


Article 706
If an obligor has paid money or delivered anything as performance of an obligation that has not yet fallen due, the obligor may not demand the return of the money paid or thing delivered;provided, however, that if the obligor tendered anything by mistake, the obligee must return the benefit gained as a result..


Article 5
(1) A minor must obtain the consent of the minor's legal representative to perform a juridical act;provided, however, that this does not apply to a juridical act for merely acquiring a right or being released from an obligation.
(2) A juridical act in contravention of the provisions of the preceding paragraph is voidable.
(3) Notwithstanding the provisions of paragraph (1), a minor may freely dispose of property that the legal representative has permitted the minor to dispose of for a specified purpose, to an extent that falls within the scope of that purpose. The same applies if the minor disposes of property that the legal representative has permitted the minor to dispose of without specifying a purpose..


Article 387
(1) A registered lease may be duly asserted against mortgagees that hold mortgages registered prior to the registration of that lease if all mortgagees that hold those mortgages give their consent and those consents are registered.
(2) For a mortgagee to give the consent referred to in the preceding paragraph, the approval of the persons that hold rights for which the mortgage is the subject matter and other persons that will suffer detriment as a result of the consent of the mortgagee must be obtained..


Article 494
(1) In the following cases, a performer may deposit the subject matter of the performance with an official depository for the benefit of the obligee. In such a case, the claim is extinguished when the performer makes the deposit:
(i) the performer tenders the performance, and the obligee refuses to accept it; or
(ii) the obligee is unable to accept the performance.
(2) The preceding paragraph also applies if the performer is unable to ascertain the obligee;provided, however, that this does not apply if the performer is negligent in this respect.
Article 474
(1) A third party may also perform an obligation.
(2) A third party that has no legitimate interest in performing an obligation may not perform the obligation against the will of the obligor;provided, however, that this does not apply if the obligee did not know that the performance is against the will of the obligor.
(3) The third party prescribed in the preceding paragraph may not perform the obligation against the will of the obligee;provided, however, that this does not apply if the third party performs the obligation as requested by the obligor, and the obligee knew this.
(4) The provisions of the preceding three paragraphs do not apply if the nature of an obligation does not permit the performance by a third party or if a party manifests the intention to prohibit or restrict the performance by a third party..


Article 617
(1) If the parties do not specify the term of a lease, either party may give a notice of termination at any time. In such cases, a lease as set forth in one of the following items terminates when the term prescribed in that item has passed after the day of the notice of termination:
(i)
(ii)
(iii)
(2) With respect to leases of land with harvest seasons, the notice of termination must be given after the end of that season and before the next start of cultivation..


Article 115
A counterparty may rescind a contract that a person without the authority to represent has concluded until the principal ratifies it;provided, however, that this does not apply if the counterparty knew at the time of the conclusion of the contract that the agent had no authority to represent..


Article 20
(1) After a person with qualified legal capacity who is involved in dealings with another party becomes a person with the legal capacity to act (meaning a person whose legal capacity to act is not subject to restrictions; the same applies hereinafter), the other party to those dealings may fix a period of one month or longer and demand that the person give a definite answer within that period of time as to whether the person will ratify an act that the person may rescind. In such a case, if the person fails to send a definite answer within that period of time, the person is deemed to have ratified that act.
(2) The second sentence of the preceding paragraph also applies if, before the person with qualified legal capacity becomes a person with the legal capacity to act, the other party to dealings involving the person with qualified legal capacity lodges the demand prescribed in the preceding paragraph with the legal representative, curator, or assistant of that person with respect to an act within the scope of their authority, and they fail to send a definite answer within the fixed period of time referred to in that paragraph.
(3) If a person does not send notice within the period of time set forth in the preceding two paragraphs indicating that the person has completed any special formalities that an act requires, the person is deemed to have rescinded that act.
(4) The other party to dealings involving a person with qualified legal capacity may lodge a demand with a person under curatorship or with a person under assistance who is subject to a decision as referred to in Article 17, paragraph (1) to demand that the person get the curator or assistant to ratify an act within the fixed period referred to in paragraph (1). In such a case, if the person under curatorship or person under assistance does not send notice within that period indicating that the person has gotten the curator or assistant to ratify the act in question, the person is deemed to have rescinded that act..


Article 523
(1) An offer which specifies a period for acceptance may not be revoked;provided, however, that this does not apply if the offeror reserves the right to revoke.
(2) If an offeror does not receive notice of acceptance of the offer referred to in the preceding paragraph within the period referred to in that paragraph, the offer ceases to be effective..


Article 605
A lease of immovables, when registered, may be duly asserted against a third party such as a person that subsequently acquires real rights with respect to the immovables..


Article 597
(1) If the parties specify a period of a loan for use, the loan for use is terminated upon the expiration of the period.
(2) If the parties do not specify a period of a loan for use, but they specify the purpose of using and making profit from the borrowed thing, the loan for use is terminated when the borrower finishes using and making profit from the thing in line with the purpose.
(3) A loan for use is terminated upon the death of the borrower..


Article 663
(1) If the parties have not specified the timing of the return of the bailed thing, the bailee may return the same at any time.
(2) If the timing of the return is specified, the bailee may not return the deposited thing prior to the due date unless there is a compelling reason to do so..


Article 298
(1) The holder of a right of retention must possess the thing retained with the due care of a prudent manager.
(2) The holder of the right of retention may not use, lease or provide as a security the thing retained unless that holder obtains the consent of the obligor;provided, however, that this does not apply to uses necessary for the preservation of that thing.
(3) If the holder of a right of retention violates the provisions of the preceding two paragraphs, the obligor may demand that the right of retention be terminated.
Article 350
The provisions of Articles 296 through 300 and those of Article 304
apply mutatis mutandis to pledges..


Article 556
(1) An option contract for a purchase and sale made by one party becomes effective when the other party manifests the intention to complete the purchase and sale.
(2) If no period is provided in relation to the manifestation of intention referred to in the preceding paragraph, the party to the option contact may issue a notice of demand to the other party, specifying a reasonable period of time, to the effect that the other party is to give a definite answer as to whether or not that party will complete the sale within that period. In such cases, if the other party fails to give a definite answer within that period, the option contract for a purchase and sale by one party ceases to be effective..


Article 298
(1) The holder of a right of retention must possess the thing retained with the due care of a prudent manager.
(2) The holder of the right of retention may not use, lease or provide as a security the thing retained unless that holder obtains the consent of the obligor;provided, however, that this does not apply to uses necessary for the preservation of that thing.
(3) If the holder of a right of retention violates the provisions of the preceding two paragraphs, the obligor may demand that the right of retention be terminated..


Article 545
(1) If 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.
(2) In 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.
(3) In 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.
(4) The exercise of the right to cancel does not preclude claims for compensation for loss or damage.
Article 546
The provisions of Article 533
apply mutatis mutandis to the preceding Article.
Article 533
A party to a bilateral contract may refuse to perform that party's own obligation until the other party tenders the performance of that other party's obligation (including the performance of an obligation to compensate for loss or damage in lieu of the performance of an obligation);provided, however, that this does not apply if the obligation of the other party is not yet due..


Article 6
(1) A minor who is permitted to conduct one or multiple types of business has the same capacity to act as an adult as far as that business is concerned.
(2) In a case as referred to in the preceding paragraph, if there are grounds that make the minor unable to sustain that business, the legal representative may revoke or limit the permission therefor in accordance with the provisions of Part IV (Relatives)..


Article 545
(1) If 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.
(2) In 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.
(3) In 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.
(4) The exercise of the right to cancel does not preclude claims for compensation for loss or damage..


Article 292
If dominant land is co-owned by more than one person, and expiry of prescription period is postponed or prescription period is renewed in favor of one co-owner, the postponement of expiry of prescription period or the renewal of prescription period is also effective for the benefit of other co-owners..


Article 5
(1) A minor must obtain the consent of the minor's legal representative to perform a juridical act;provided, however, that this does not apply to a juridical act for merely acquiring a right or being released from an obligation.
(2) A juridical act in contravention of the provisions of the preceding paragraph is voidable.
(3) Notwithstanding the provisions of paragraph (1), a minor may freely dispose of property that the legal representative has permitted the minor to dispose of for a specified purpose, to an extent that falls within the scope of that purpose. The same applies if the minor disposes of property that the legal representative has permitted the minor to dispose of without specifying a purpose..


Article 137
The obligor may not assert the benefit of time stipulation if:
(i) the obligor has become subject to the order commencing bankruptcy proceeding;
(ii) the obligor has lost, damaged, or diminished the security; or
(iii) the obligor fails to provide security when it has the obligation to do so..
