Lies Of The Beholder by Brandon Sanderson

In this novella, the protagonist grapples with the complexities of identity and memory as he faces a mysterious antagonist who manipulates perceptions and truths. The story delves into themes of self-discovery and the nature of reality, as the protagonist must confront his own past and the illusions that have shaped his life. As the narrative unfolds, he navigates a series of psychological challenges and revelations, ultimately seeking to uncover the genuine essence of his existence amidst the deceptive layers constructed by the antagonist.