The Memory Police by Yoko Ogawa (Japan)

A dystopian novel where the inhabitants of an unnamed island experience a mysterious phenomenon causing objects and concepts to disappear from their collective memory, with a mysterious force called the "Memory Police" enforcing this forgetting, forcing those who can still remember to live in fear and secrecy as they try to preserve their past through the power of memory. This story follows a young novelist on the island who struggles to maintain her identity as things around her vanish.