The light novel Kono Hon wo Nusumu Mono wa (この本を盗む者は / Whoever Steals This Book) by Fukamidori Nowaki will be adapted into an anime film, which will premiere in 2026. A website has opened for the film, revealing a teaser trailer and a teaser visual and confirming that Fukuoka Daisei is directing the anime film at Kagokan studios.
[https://www.youtube.com/watch?v=FPAKi_PDdTU]
Kadokawa published Fukamidori’s Kono Hon wo Nusumu Mono wa novel in October 2020, and Fukamidori wrote a spinoff short story in the novel titled Kuusou no Umi (Fantasy Sea) in May 2023.
Sora Kakeru adapted the original novel into a manga from December 2021 to March 2023, and Kadokawa published the manga’s first tankoubon volume in June 2022 and the third and final volume in April 2023.
Yen Press releases the original novel and manga adaptation in English under the name Whoever Steals This Book. It released the novel in February 2025 and all three manga volumes in 2024. Yen Press describes the novel’s story below:
“Mifuyu is a high school student living with a large collection of books left by her great-grandfather—the vast library known as Mikura Hall. Although her father is the current caretaker, Mifuyu herself doesn’t share her family’s passion for literature. But when several books are stolen from the library, triggering an ancient curse, the town is transformed according to the various stories—and the only way to put things right is for Mifuyu to catch the thief. With the help of a mysterious girl named Mashiro, Mifuyu sets out on an adventure through the different story worlds!”
