Manga in Theory and Practice is a guidebook written by Hirohiko Araki, the creator of the popular manga series JoJo's Bizarre Adventure. In this book, Araki shares his insights and techniques for creating compelling manga. He covers various aspects of manga creation, including character design, storytelling, and panel layout. Araki also provides examples from his own work to illustrate his points. Whether you're an aspiring manga artist or a fan of JoJo's Bizarre Adventure, Manga in Theory and Practice is a valuable resource.