Natsu Okuhara is based on Reiko Okuyama, one of the first Japanese female animators.
Her associates Koya Kamiji, Kazuhisa Sakaba and Tsutomu Naka are based on Studio Ghibli veterans Hayao Miyazaki, Isao Takahata and Yasuji Mori.
Her associates Koya Kamiji, Kazuhisa Sakaba and Tsutomu Naka are based on Studio Ghibli veterans Hayao Miyazaki, Isao Takahata and Yasuji Mori.
Veteran animators Hitomi Tateno and Yôichi Kotabe were hired on the project as animation supervisor for the opening credits, and animation history consultant respectively.