"Manga Matrix: Create Unique Characters Using the Japanese Matrix System" by Hiroyoshi Tsukamoto is a trade paperback book published by HarperCollins in 2006. The book covers techniques in cartooning and offers a systems approach to creating unique characters in the Japanese manga style. With illustrations included, readers can learn from the author's expertise and apply the concepts to their own work. This book is a valuable resource for those interested in art, crafts, and hobbies, particularly in the realm of comic book creation.