The Dengeki Bunko Autumn Festival Online 2026 livestream event revealed additional cast, staff, and the first promotional video for the television anime adaptation of En Mikami's Biblia Koshodou no Jiken Techou (The Case Files of Biblia Bookstore) novel on Saturday. The anime is scheduled to premiere in April 2027.

Cast
Ayaka Shinokawa: Reo Osanai (Tefuda ga Oome no Victoria)
Shida: Wataru Takagi (Kirio Fanclub)
Kikuya Kasai: Youhei Azakami (Akane-banashi)
Nao Kosuga: Saeko Kamijou (Gekai Elise)

Staff
Assistant Director: Kento Matsui (Spy x Family episode director)
Prop Design: Manami Fukuyo (Atarashii Joushi wa Do Tennen animation director)
Art Director: Masatoshi Kai (Gimai Seikatsu)
Art Setting: Yoshinori Shiozawa (Kaoru Hana wa Rin to Saku art design)
Color Design: Kazuko Nakashima (Nige Jouzu no Wakagimi)
Director of Photography: Teruyuki Kawase (Buddy Daddies)
Photography Supervisor: Tomoyuki Shiokawa (Seihantai na Kimi to Boku director of photography)
CG Director: Tatsuhiro Ito
Editing: Rie Matsubara (Ninja to Koroshiya no Futarigurashi)
Sound Director: Tomohiko Yaginuma (Shoushimin Series 2nd Season)
Sound Effects: Shouta Yaso (Koori no Jouheki)

Mamoru Kanbe (Shoushimin Series) is directing the anime at CloverWorks, with Ayako Kurata (Granblue Fantasy The Animation anime series director) serving as assistant director. Toshiya Oono (86) is handling the series composition. Jun Nakai (NieR:Automata Ver1.1a) is designing the characters, while Takahiro Obata (Yakusoku no Neverland) is composing the music.

Mikami began penning the mystery drama novel with illustrations by Hagu Koshijima under the Media Works Bunko label in March 2011. Kadokawa (formerly ASCII Media Works) published the 12th volume on April 24.

Nakano originally began a manga adaptation in Altima Ace in February 2012, which later moved to Monthly Asuka in December 2012 until it concluded in July 2014. Kadokawa published the sixth and final volume in September that year.

Ryou Kouda serialized a second manga adaptation in good! Afternoon from July 2012 to September 2013. Kodansha published the third and final volume in January 2014.

Haruki Niwa began a manga adaptation of the tenth novel volume, subtitled Tobirako to Utsuro na Yume, in Young Ace UP! in February 2024. Kadokawa published the third volume in November 2025.

A live-action drama adaptation aired on Fuji TV in 11 episodes from January to March 2013.

PV 1


Source: Dengeki Online