Article 472-2Defense by New Obligor in Discharging Assumption of an Obligation
第四百七十二条の二（免責的債務引受における引受人の抗弁等）
A new obligor may duly assert against the obligee any defense that could have been asserted by the initial obligor at the time when the discharging assumption of an obligation became effective, with regard to the obligation that the replacing obligor has assumed through the assumption of obligation releasing the obligor.
引受人は、免責的債務引受により負担した自己の債務について、その効力が生じた時に債務者が主張することができた抗弁をもって債権者に対抗することができる。
If the old obligor has a right to revoke or right to cancel against the obligee, the new obligor may refuse to perform the obligation to the obligee to the extent that the initial obligor could have been released from the obligation by exercising either of these rights should the assumption of obligation releasing the obligor not be effected.
債務者が債権者に対して取消権又は解除権を有するときは、引受人は、免責的債務引受がなければこれらの権利の行使によって債務者がその債務を免れることができた限度において、債権者に対して債務の履行を拒むことができる。