Natsume's Book of Friends has been adapted as a series of drama CDs, as well as an anime television series produced by Brain's Base (seasons 1-4) and Shuka (seasons 5-6), which was broadcast on TV Tokyo for 6 seasons in 2008, 2009, 2011, 2012, 2016 and 2017. The manga is licensed for English-language release in North America by Viz Media, which released the first volume in January 2010. The first four seasons of the anime have been licensed by NIS America for a North American release in 2012. A fifth season began airing on October 4, 2016. A sixth season began airing on April 11, 2017.