A 4-panel manga series is also serialized online for free.
Entitled "Jiji Manga", it was thought to have been influenced by the works of Frank Arthur Nankivell and of Frederick Burr Opper.
Before the game's release, a four-panel Internet manga illustrated by Pero, one of the art directors in the game, began to be serialized irregularly on the game's official website.
Another manga, this time a four-panel comic strip, drawn by Yuki Kiriga, was serialized in ASCII Media Works' Dengeki G's Magazine between February 2007 and January 2008; the manga transferred to Dengeki G's Festival! Comic in April 2008 and ran until April 2009.
From December 1988 through July 1997, the magazine ran a "New Female Yonkoma Manga Artist" series which introduced a number of new artists such as Megumi Nanzawa, Chinatsu Tomobiki, Nobara Nonaka, Niniko Nitta, Moeko Narita, Yukari Tominaga, Aoi Morimura, Maya Koikeda, and Ryōji Sekine.
Based on the yonkoma manga Nono-chan by Hisaichi Ishii, it was the first completely digital Studio Ghibli film.