Catch up on the essentials
- The television anime adaptation of En Mikami's mystery novel Biblia Koshodou no Jiken Techou (The Case Files of Biblia Bookstore) will premiere in April 2027, according to a first promotional video unveiled during the Dengeki Bunko Autumn Festival Online 2026 livestream event.
- The event revealed four additional cast members: Reo Osanai as Ayaka Shinokawa, Wataru Takagi as Shida, Youhei Azakami as Kikuya Kasai, and Saeko Kamijou as Nao Kosuga.
- Mikami began writing the Biblia Koshodou no Jiken Techou novel in March 2011 under the Media Works Bunko label, with illustrations by Hagu Koshijima.
Selected from this article · 2026-10-03
Read on for the full pictureBiblia Koshodou no Jiken Techou Sets April 2027 Premiere with New Trailer
The television anime adaptation of En Mikami's mystery novel Biblia Koshodou no Jiken Techou (The Case Files of Biblia Bookstore) will premiere in April 2027, according to a first promotional video unveiled during the Dengeki Bunko Autumn Festival Online 2026 livestream event. The project is being directed at CloverWorks, with Ayako Kurata attached as assistant director and Toshiya Oono handling series composition. Jun Nakai is designing the characters and Takahiro Obata is composing the music.
Newly Announced Cast and Production Staff
The event revealed four additional cast members: Reo Osanai as Ayaka Shinokawa, Wataru Takagi as Shida, Youhei Azakami as Kikuya Kasai, and Saeko Kamijou as Nao Kosuga. Production credits announced alongside the cast include Kento Matsui as assistant director, Manami Fukuyo on prop design, Masatoshi Kai as art director, Yoshinori Shiozawa handling art setting, Kazuko Nakashima on color design, Teruyuki Kawase as director of photography, Tomoyuki Shiokawa as photography supervisor, Tatsuhiro Ito as CG director, Rie Matsubara on editing, Tomohiko Yaginuma as sound director, and Shouta Yaso on sound effects. Mamoru Kanbe is credited as director.
Source Material and Publishing Background
Mikami began writing the Biblia Koshodou no Jiken Techou novel in March 2011 under the Media Works Bunko label, with illustrations by Hagu Koshijima. Kadokawa, formerly ASCII Media Works, released the 12th volume on April 24. A manga adaptation by Nakano originally launched in Altima Ace in February 2012 before moving to Monthly Asuka in December 2012.
Other Developments
Separately, a new anime tied to Sword Art Online creator Reki Kawahara debuted a trailer ahead of its fall release, according to a separate report. No additional casting, staff, or release-date details from that project were detailed in the available coverage.
Next Milestone
The next verifiable milestone for Biblia Koshodou no Jiken Techou is the anime's April 2027 television premiere, with further staff, cast, and broadcast details expected from CloverWorks and Kadokawa in the intervening months.
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