Though largely standalone, Yumi ties into Sanderson’s wider universe:
Yumi and the Nightmare Painter by Brandon Sanderson - Goodreads Yumi and the Nightmare Painter by Brandon Sanderson EPUB PDF
The publisher, Dragonsteel, sells DRM-free copies directly. Yes, you read that right—. When you buy from them, you get high-quality EPUB, PDF, and MOBI files without any restrictions. Though largely standalone