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Whoever Steals This Book Anime Film's New Trailer Reveals Cast, More Staff, Theme Song
posted on by Anita Tai
The official website for the anime film of Nowaki Fukamidori's Whoever Steals This Book (Kono Hon o Nusumu Mono wa) fantasy novel posted a new trailer, along with the cast, more staff members, information on its theme song, and a key visual. The trailer previews the theme song "Share" by vocalist YUKI (formerly of Judy and Mary):


The cast includes (top row, left to right):
- Rin Kataoka as Mifuyu Mikura
- Sora Tamaki as Mashiro
(Second row, left to right):
- Nao Tōyama as Hirune Mikura
- Junichi Suwabe as Ayumu Mikura
- Shizuka Itō as Keiko Yosano
- Shimba Tsuchiya as Takafumi Haruta
- Romi Park as Tamaki Mikura
The newly announced staff members include:
- Color Key Artist: Eriko Murata, Tarō Kaguchi
- CG Director: Kōji Ichikawa
- 2D Design: Aya Kubota
- Compositing Director of Photography: Yuichiro Tozawa
- Editing: Kengo Shigemura
- Sound Director: Fumiyuki Go
- Animation Producer: Yūji Higa

The film will debut on December 26.
Daisei Fukuoka (Radiant series director, Danganronpa 3: The End of Hope's Peak High School: Despair Arc and Future Arc, Phantom of the Idol) is directing the film at Kagome Company (Kagokan). Yasuhiro Nakanishi (Kaguya-sama: Love is War, No Longer Allowed In Another World, Shy) is writing the script, Keiko Kurosawa (Astra Lost in Space, Asobi Asobase -workshop of fun-) is designing the characters and is the film's animation director, and Michiru Ōshima (Fullmetal Alchemist, Little Witch Academia) is composing the music. Kagokan founder Yūji Higa (Danganronpa 3: The End of Hope's Peak High School: Despair Arc, Asobi Asobase -workshop of fun-, Radiant) is the animation producer, and Kadokawa Animation is distributing the film.
Yen On licensed and released the novel on February 18. Yen On describes the story:
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!
Kadokawa first published the novel in 2020. A manga adaptation of the novel by Kakeru Sora was serialized in Kadokawa's Young Ace magazine from December 2021 to March 2023. Yen Press released the manga's three compiled book volumes in English.
Kadokawa published Fukamidori's spinoff novel titled Kūsō no Umi (Fantasy Sea) in May 2023.
Sources: Whoever Steals This Book film's official website, Comic Natalie