Whoever Steals This Book
Whoever Steals This Book is a Japanese novel written by Nowaki Fukamidori. It was published by Kadokawa Shoten in October 2020, with a paperback edition being released under its Kadokawa Bunko imprint in June 2023. A manga adaptation illustrated by Kakeru Sora was serialized in Kadokawa Shoten's Young Ace magazine from December 2021 to March 2023 and was compiled into three volumes. An anime film adaptation produced by Kagokan premiered in Japan in December 2025.
Premise
Mifuyu Mikura, a high school girl whose family has a long history of book collecting, has not inherited her great-grandfather and father's love for books. Her great-grandfather set up a library, known as the Mikura Hall, which became popular among the locals. However, it was closed to the public following a theft incident, with rumors spreading about the nature of its closure. One day, Mifuyu visits Mikura Hall following complaints from the neighbors. There, she encounters a talisman that came from a stolen book, warning that consequences were to happen if the book was stolen. Mifuyu then accidentally triggers a curse that transforms the town. A mysterious girl named Mashiro appears, saying that only by finding the book's thief will the town return to normal. The two set off on a journey to find the book thief and save the town.Characters
;Mifuyu Mikura;Mashiro
;Hirune Mikura
;Ayumu Mikura
;Keiko Yosano
;Takafumi Haruta
;Tamaki Mikura
;Junichirō Kaname
;Tanbi Che
;Natsume Harada
;Osamu Kikuchida
;Shiori Haruta
;Kakihara
;Hiroda
;Takayama
;Osanai
;Uhara
;Mysterious Man
;Kazune Mikura
;Coffeehouse Owner
;Negima
;Regular at the Coffeehouse