List of Natsume's Book of Friends episodes

Natsume's Book of Friends is a Japanese anime television series based on the 2003 manga series by Yuki Midorikawa. The first anime series was produced by Brain's Base under the direction of Takahiro Omori. It was broadcast on the TV Tokyo network in two seasons of 13 episodes each, the first from July 7 to September 29, 2008, and the second, called Natsume's Book of Friends Continued (続 夏目友人帳), from January 5 to March 30, 2009. NIS America later released the series from Volume 1 through Volume 3 alongside Natsume's Book of Friends seasons 1 and 2 on February 4, 2014.

For the first season, the opening theme was "Simultaneous Voice" (一斉の声) by Shūhei Kita, and the ending theme was "Summer Evening Sky" (夏夕空) by Kousuke Atari.

For the second season, the opening theme was "That Day's Time Machine" (あの日タイムマシン) by Long Shot Party and the ending theme was "I Love You" (愛してる) by Kourin (Also known as Callin'). Both seasons were released on five DVDs each.

The third season, titled Natsume's Book of Friends Three (夏目友人帳 参) aired between July 5 and September 27, 2011. The opening theme is "I Can Do" (僕にできること) by How Merry Marry and the ending theme is "Pieces of You" (君ノカケラ) by Kousuke Atari featuring Emiri Miyamoto.

The fourth season, titled Natsume's Book of Friends Four (夏目友人帳 肆) aired between January 2 and March 26, 2012. The opening theme is "Now, This Time" (今、このとき.) by Hiiragi and the ending theme is "Treasure" (たからもの) by Marina Kawano.

The fifth season, titled Natsume's Book of Friends Five (夏目友人帳 伍) began airing on October 4, 2016. The opening theme is "Takarabako" (タカラバコ) by Sasanomaly and the ending theme is "Akane Sasu" (茜さす) by Aimer.

The sixth season, titled Natsume's Book of Friends Six (夏目友人帳 陸) began airing on April 11, 2017. The opening theme is "Floria" (フローリア) by Tomohisa Sako and the ending theme is "Kimi no Uta" (きみのうた) by Rei Yasuda.

A seventh season has been announced.