The official website for the Key's crossover television anime titled Kaginado revealed two cast change, main staff, and key visual (pictured) on Friday. The anime will begin airing on October 13 at 1:00 a.m. on Tokyo MX, followed by KBS Kyoto, Sun TV, Niigata TV 21, Hokuriku Asahi Broadcasting, Nagano Asahi Broadcasting, Hokkaido Television Broadcasting, BS Nittele, and AT-X.

Synopsis
"KAGINADO Academy." The characters that have wringed out gallons of tears from Key fans all over the world for the past 20 years gather in this utopia... of sorts. Now they are moving not only the fans' emotions but the barriers dividing their worlds as well, to enjoy a new school life in a whole new world. Free, fun, and filled with joy. A dreamlike story is about to begin.

Asami Sanada (Date A Live) will be replacing Tomoko Kawakami as Misuzu Kamio from Air, who passed away in 2011 after a long battle with ovary cancer. Sara Takeda is replacing Asami Okamoto as Kano Kirishima.

Staff
Director: Kazuya Sakamoto (Kanojo to Kanojo no Neko: Everything Flows)
Series Composition: Takashi Aoshima (Kakushigoto)
Script: Takashi Aoshima, Kai (Rewrite), Touya Okano (Noblelige!)
Character Design: Eriko Haga (Beelzebub-jou no Okinimesu mama. animation director)
Prop Design: Issei Araki (Hello World key animation)
Art Director: Yukihiro Shibutani (Tonikaku Kawaii)
Color Design: Asami Kitsukawa
Director of Photography: Tomoaki Suzuki (Tatoeba Last Dungeon Mae no Mura no Shounen ga Joban no Machi de Kurasu Youna Monogatari photography)
Editing: Kazuo Kajikawa
Sound Director: Akane Maeda
Sound Production: Tohokushinsha
Music Production: Visual Arts, Key
Animation Production: LIDENFILMS Kyoto Studio

The crossover was originally announced in April to celebrate Key's 20th anniversary and will feature chibi renditions of characters from Kanon, Air, Clannad, Little Busters!, and Rewrite and further Key franchises which have yet to be announced.

Source: Press Release