Visually, is a masterpiece of experimental manga. Urasawa employs a technique known as "M.C. Escher storytelling." In one famous 2-page spread (pages 78-79), the panel borders themselves twist into the shape of the Bat.
For many readers, Volume 19 is where the series peaks. It is dense, intellectual, and terrifying. It answers the question "What is the Bat?" (It is the organic need for narrative conflict) while asking a larger question: "Are we living in a story we didn't choose?" Billy Bat- 19