Whoever Steals This Book

Mifuyu is a high school student who lacks the literary passion shared by her family and the residents of her book-loving town. She lives with a vast collection of volumes called Mikura Hall, which was left by her great-grandfather. When a thief steals several books from the library, an ancient curse is activated, causing the town to transform into settings from various stories. To reverse the effects and save the community, Mifuyu must track down the culprit. She embarks on a journey through different fictional worlds with the assistance of a mysterious girl named Mashiro.

This Japanese animated fantasy film was directed by Daiki Fukuoka and featured a screenplay by Yasuhiro Nakanishi. Produced by KADOKAWA and Kagokan, the movie was released on December 26, 2025. The voice cast is led by Rin Kataoka as Mifuyu Mikura and Sora Tamaki as Mashiro, with supporting roles provided by Nao Toyama, Junichi Suwabe, Shizuka Itoh, and Shimba Tsuchiya. A total of 22 cast members are credited in the production.