CISG's limitation
of avoidance of contracts to cases of "fundamental breach"
(CISG Arts. 49(1)(a), 64(1)(a)) was first considered to be an
alien concept in Japan. It was traditionally understood under
Japanese law that, as a general rule, the injured party may
avoid the contract after giving the breaching party a Nachfrist
period, no matter how trivial and what type the breach may be
(although it was also understood that fault on the part of the
breaching party was necessary). T