novel Whoever Steals This Book ( Kono Hon wo Nusumu Mono ) will be adapted into an anime film. The news came with a new teaser, promotional visual, main staff revealed, and a projected release date of 2026.
Although the voice cast has not yet been announced, the production already boasts some big names. Daiki Fukuoka Yasuhiro Nakanishi will write the script Keiko Kurosawa will handle character design and Michiru Oshima will compose the soundtrack Kagokan will produce the film , with Yuji Higa Animation Kadokawa Animation will distribute the series .

The story blends books, curses, and fantasy
Originally published by Kadokawa Shoten in October 2020, the work received a paperback edition in 2023 under the Kadokawa Bunko imprint. Additionally, it was adapted into a manga illustrated by Kakeru Sora , published in Young Ace between 2021 and 2023.
The story follows Mifuyu , a high school student born into a family of book collectors. Despite living surrounded by literature, she has an aversion to books. However, everything changes when a thief breaks into the Mikura Hall—a library founded by her great-grandfather—and triggers an ancient curse.
A journey within the books themselves
Ultimately, to recover the stolen books, Mifuyu will need to enter the stories she so despises. Alongside the enigmatic Mashiro , she will be forced to confront literary worlds and save her city from a magical and tragic fate.
Whoever Steals This Book promises to be an unexpected fantasy, with themes of self-acceptance, mystery, and literary magic. So, if you enjoy plots that play with parallel realities, get ready to follow this new enchanted universe.
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Source: Official website
