Clannad is a 2007 Japanese animated fantasy drama film directed by Osamu Dezaki and based on the visual novel of the same name developed by Key. Toei Animation announced at the Tokyo Anime Fair on March 23, 2006 that an animated film would be produced, and was released theatrically by Toei Company on September 15, 2007. The film is a reinterpretation of the Clannad storyline which centers on the story arc of the female lead Nagisa Furukawa. It was the final film directed by Dezaki before his death in April 2011.

Daisuke Sakaguchi is a Japanese voice actor affiliated with Aoni Production. He is best known for his roles in Mobile Suit Victory Gundam as Üso Ewin, Gintama as Shinpachi Shimura, Clannad as Youhei Sunohara, Blood Blockade Battlefront as Leonardo Watch, Paprika as Kei Himuro, Atashinchi as Yuzuhiko Tachibana, Hyouka as Satoshi Fukube, Guilty Crown as Souta Tamadate, Persona 5 as Yuki Mishima, Paranoia Agent as Lil' Slugger, Ragnarok The Animation as Roan, God Eater as Kōta Fujiki, and Fire Force as Viktor Licht.