变身 by Keigo Higashino

In this gripping psychological thriller, a young artist's life takes a dramatic turn after a life-saving brain surgery. As he recovers, he begins to experience unsettling changes in his personality and behavior, leading him down a path of self-doubt and fear. Struggling to hold onto his sense of identity, he grapples with the haunting question of whether he is still the same person he once was or if the surgery has transformed him into someone unrecognizable. The narrative explores themes of identity, the fragility of the human mind, and the ethical dilemmas surrounding medical intervention.