Mitosis by Brandon Sanderson

In this novella, set in a dystopian world where certain individuals possess extraordinary powers, the protagonist, David, continues his quest to fight against the oppressive rule of the Epics, superhumans who have taken control of society. As part of the Reckoners, a group dedicated to resisting the Epics, David faces a new threat in the form of Mitosis, an Epic with the ability to clone himself. The story explores themes of courage, resilience, and the complexities of power as David and his allies strive to protect their city and challenge the seemingly invincible foes.