Yumi and the Nightmare Painter

Yumi and the Nightmare Painter is a fantasy novel written by American author Brandon Sanderson. It is part of the Cosmere fictional universe and the third book of Sanderson's "Secret Projects" Kickstarter campaign. It was exclusively released on July 1, 2023, by Dragonsteel Entertainment to Kickstarter backers. In 2025 Sanderson established that the book is part of Hoid's Travails, a series narrated by the character Hoid.