Akira Archive (アキラ・アーカイヴ) is a 194-page, 2002 Kodansha art book detailing production materials from the 1988 film, including layouts, key animation frames (genga), and designs by Katsuhiro Otomo. Due to its rarity and out-of-print status, the work is frequently found on file-sharing sites as partial "Pdf 31" fragments rather than the full publication. Detailed analysis of the content is available on Exploring Akira ChronOtomo Akira Animation Archives