Biblia Koshodou no Jiken Techou Gets Anime Adaptation in April 2027

The TV anime adaptation of Biblia Koshodou no Jiken Techou is officially coming in April 2027, and the studio has already dropped character visuals and a first promotional video to prove it.

The series, based on En Mikami's bestselling novels—which have shifted over 8.5 million copies—follows Shioriko Shinokawa and Daisuke Goto, and the newly released character designs nail the core dynamic: a sharp-eyed bookstore owner and her unlikely partner unraveling mysteries tied to rare and forgotten books. The PV gives you the mood: atmospheric, deliberate, the kind of slow-burn mystery that rewards attention.

The supporting cast is locked in. Reo Koyanagi voices Fumika Shinokawa, Wataru Takagi takes Shida, Yohei Azakami plays Kikuya Kasai, and Saeko Kamijo rounds out the ensemble as Nao Kosuge. That's a solid lineup for a narrative that hinges on character chemistry and layered dialogue.

What matters here: Biblia Koshodou no Jiken Techou is a proven property with real readership behind it. An 8.5-million-copy franchise doesn't get adapted on a whim. The anime is betting that the book-mystery angle—the obsessive hunt through old pages and forgotten stories—translates to screen the way it did on the page. April 2027 will tell whether it does.

Source: Anime Anime