Hayao Miyazaki's Daydream Data Notes (Miyazaki Hayao no Zassō Nōto) is the collective name for Hayao Miyazaki's annotated manga and illustrated essays he contributed, very sporadically, to the hobby magazine Model Graphix in the 1980s and early ’90s. The name has also been translated into English as Hayao Miyazaki's Random Thoughts Notebook. Game designer Kazuma Kujo stated in a 2012 Retro Gamer article that the book served as inspiration during development of Metal Slug.
Daydream Data Notes began as private sketches that can be traced back to Miyazaki's earliest childhood. Born in 1941 he, like war babies all over Europe, drew almost exclusively planes, tanks and battleships.
Installments of Daydream Data Notes were irregularly printed. Episodes occasionally appeared in the November 1984 through May 1990 issues of the monthly magazine Model Graphix
Selections from his Daydream Data Notes have been bundled in book form, published by Dainippon Kaiga in December 1992. In August 1997 a revised and expanded edition was released by the same publisher. The first edition does not contain Hikōtei Jidai.
The annotated manga The return of Hans (ハンスの帰還, Hans no kikan) is not included in either edition but appears in a different collection, Tigers covered with mud: Hayao Miyazaki's Delusion Notes (泥まみれの虎 宮崎駿の妄想ノート, Doromamire No Tora Miyazaki Hayao No Mōsō Nōto), published, by Dainippon Kaiga, in August 2002.
- Shirarezaru Kyojin no Mattei
- Kōtetsu no Ikuji
- Tahōtō no Deban
- Noufu no Me
- Ryū no Kōtetsu
- Kyūshū Jōkū no Jūgōsakuki
- Anshōmaru Monogatari
- London Jōkuu 1918-nen
- Saihin Zensen
- Hikōtei Jidai, an early version of Porco Rosso
- Buta no Tora
In 1995, Miyazaki's Daydream Notes was turned into a series of radio broadcasts for Nippon Broadcasting System. When commenting on this dramatization in an interview for Tokuma Shoten's Animage magazine, Miyazaki explains his political stance as an opponent of Japan's rearmament and contrasts this with his lifelong interests in war, military affairs and military hardware. He explains that he expresses this fascination by drawing the fantastical craft, which are then published in Model Graphix, a magazine for scale model creation. He said that he did his best drawings when he was serializing his manga Nausicaä, "After staying up till dawn drawing the last manga pages to meet the printer's deadline, I would draw these models the next day; each would take a week. […] In essence it is my hobby to draw seemingly real vehicles, it works as my psychological release valve."