Non Lasciarmi by Kazuo Ishiguro

A woman looks back on her childhood at an English boarding school where pupils are protected and encouraged in art and friendship, only to discover they were raised to provide their organs; through her memories of a fraught friendship and love triangle with two classmates, the narrative quietly reveals the slow loss of innocence and confronts questions of identity, memory, mortality and the ethical cost of a society that treats certain lives as expendable.