Wakaki Tamiki tweeted in his twitter (@angelfrench) that the length of Kami nomi zo Shiru Sekai TV series depends on the reactions of the viewers (i.e. the sales of the DVD and other media).



Wakaki is anxious about the poor environment of the anime creators. "In the case of manga, the author can improve the quality of the work and make money by his/her private effort, but anime creators' efforts never pay.", he said. "I've learned how hard the anime production is, so I'm seriously thinking about how to sell it."

Sources: Wakaki's twitter