and Air film) announced at the Tokyo Anime Fair on March 23, 2006 that an animated film would be produced. The Clannad film was released on September 15, 2007, directed by the same director of the Air film, Osamu Dezaki, and the screenplay was written by Makoto Nakamura. The film is a reinterpretation of the Clannad storyline which centers on the story arc of the female lead Nagisa Furukawa. The film was released on DVD in three editions: the Collector's Edition, the Special Edition, and the Regular Edition on March 7, 2008. Sentai Filmworks released an English-subbed and dubbed version of the film in March 2011. Anime series On March 15, 2007, the Japanese television station BS-i announced a Clannad anime series via a short 30-second teaser trailer that was featured at the end of the final episode of the second Kanon anime series. Clannad is produced by Kyoto Animation, directed by Tatsuya Ishihara, and written by Fumihiko Shimo, who also worked on other adaptations of Key's visual novels Air and Kanon. The anime aired between October 4, 2007 and March 27, 2008, containing 23 aired episodes out of a planned 24; the broadcast time was first announced on August 11, 2007 at the TBS festival Anime Festa, which is also when the first episode was showcased. The anime series was released in a set of eight DVD compilations released between December 19, 2007 and July 16, 2008 by Pony Canyon, with each compilation containing three episodes. Of the 24 episodes, 23 were aired on television with the first 22 being regular episodes, followed by an additional extra episode. The last episode was released as an original video animation (OVA) on the eighth DVD on July 16, 2008 and is set in an alternate universe from the anime series where Tomoya and Tomoyo are dating, which is based on Tomoyo's scenario in the game. The OVA episode was previewed on May 31, 2008 for an audience of four-hundred people picked via a mail-in postcard campaign. A Blu-ray Disc (BD) box set of Clannad was released on April 30, 2010. After the ending of the 23rd episode of the first Clannad anime series, a 15-second teaser trailer aired promoting a second season titled Clannad After Story. The anime is again animated by Kyoto Animation, and animates the After Story arc from the visual novel, which is a continuation of Nagisa's story,