Osaka Banpaku (大阪万博 Ōsaka Banpaku), also known as Osaka Expo, is a 16 chapters long Azumanga Daioh 10th anniversary book that was published on October 27, 2009, coinciding with the release of the three volumes long repackaged version of the series containing redrawn art and additional chapters known as Azumanga Daioh: Supplementary Lessons. It is made by Yotuba Sutazio and was released by MediaWorks. Osaka Banpaku includes images of noteworthy merchandise released for the series, such as Chiyo-chichi boxers, Maya plushies, figures, t-shirts and much more, Dengeki Daioh covers by Kiyohiko Azuma featuring the main characters, official artwork seen on DVD covers, pages from the daily calendar and guest comics by the manga artists Hekiru Hikawa, Masakazu Iwasaki, Ryoichi Koga, Barasui (creator of Strawberry Marshmallow), Dowman Sayman, Usakun, Keiichi Arawi (creator of Nichijou), Kashmir, Shinichi Yuuki, Saxyun, Kaduho, Masaru Kaneko, Suka, Daioki, Ume Aoki (creator of Hidamari Sketch) and Shinofusa Rokurou. The book is 304 pages long and half of these are merchandise and fandom-related while the other half is devoted to the guest comics. The other manga artists drew yonkoma similar to the original ones and with the same characters as in Azumanga Daioh, but in their own personal styles. The book is entirely in Japanese.