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Anime film 'Lonely Castle in the Mirror' releases main trailer for December 2022 premiere

Lonely Castle in the Mirror premieres on Dec. 23. After competitive auditions, the voice acting role of Kokoro Anzai goes to Ami Touma.

By: Nicole S. Castro on October 14, 2022 at 11:25 PHT

A second teaser trailer has been released for the anime film adaptation of Mizuki Tsujimura's 2017 fantasy novel Lonely Castle in the Mirror (Romaji: Kagami no Kojou, Japanese: かがみの孤城).

The film is animated by A-1 Pictures. It will premiere in theaters in Japan this Dec. 23, 2022. Below is the latest movie poster.

Lonely Castle in the Mirror movie poster | PHOTO COURTESY: Comic Natalie

The plot revolves around female protagonist Kokoro Anzai (CV: Ami Touma) who shuts herself in her room and refuses to go to school after a frightening experience. One day, the mirror in her room begins to glow and she is transported to the world inside the mirror to search for a Wish Key to grant a single wish.

The new trailer also features the theme song Merry Go 'Round by Yuuri.

The following voice actors are also expected to make their appearance in the film:

Lonely Castle in the Mirror cast | PHOTO COURTESY: Comic Natalie


  • Akiko Yajima

  • Karen Miyama

  • Anji Ikehata

  • Ayaka Yoshimura

Lonely Castle in the Mirror won first place in the 2018 Japan Booksellers' Award and became an instant bestseller in Japan, selling over half a million copies. The novel also won the Da Vinci Book of the Year in 2017 for the Novel Category. Tsujimura's work then won the Da Vinci Book of the Year again in 2021, this time for the Paperback Category.

An English translation of the original novel (translated by Philip Gabriel) is available on Penguin Books and Amazon.

In addition, a manga adaptation with illustrations by Tomo Taketomi is ongoing serialization in Shueisha's Ultra Jump imprint.


  • Original: Mizuki Tsujimura (published by Poplar Publishing)

  • Director: Keiichi Hara

  • Script: Miho Maruo

  • Character design/Chief animation director: Keigo Sasaki

  • Visual concept/Castle design: Ilya Kuvshinov

  • Music: Harumi Fuuki

  • Planning and Production coordinator: Shochiku, Nippon TV

  • Distribution: Shochiku

  • Animation production: A-1 Pictures

Source: Lonely Castle in the Mirror official website, Comic Natalie




Nicole is based in the Philippines and works as a freelance Japanese Translator/Interpreter and copywriter (English). She is a JLPT N2 passer who watches anime to "study" for N1. She has a long career history on LinkedIn (with primary focus on media and translation), but her anime watchlist is much, much longer.


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