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The production team of the anime adaptation of The Case Book of Arne (Arne no Jiken-bo)based on the mystery game developed by Game Magazinerevealed a new promotional video that confirms its premiere for the January 6, 2026. The trailer also introduced the main cast and the artists in charge of the musical themes.
The opening theme is titled “QED” and will be performed by the singer Souwhile the closing theme, “Ningyō no Machi” (“City of Dolls”), will be performed by the singer-songwriter Watashi Kobayashi. The composer Takeaki Wadaresponsible for the game's original theme, participated in the arrangement of the final song.


voice cast
- Mariya Ise (Killua Zoldyck in Hunter x HunterReg in Made in Abyss) as Luis Hartman
- Kōki Uchiyama (Rui Kamishiro in Tokyo GhoulTomura Shigaraki in Boku no Hero Academia) as Arne Neuntöte
- Aimi Tanaka (Uraraka Ochaco in Boku no Hero AcademiaYoung Naruto in Boruto: Naruto Next Generations) as young Arne Neuntöte
- Yuka Nukui (Miku Nakano in Go-Toubun no HanayomeEna Saitou in Yuru Camp) as Lynn Reinweiss
Production team
The direction will be in charge of Keisuke Inoue (Ao-chan wa Benkyou ga Dekinai, Otome Game no Hametsu Flag, Level 1 Maou to One Room Yuusha), who also co-writes the script with Murasakiresponsible for the setting and production of the original game.
Akiko Sato (Trigun Stampede, A Condition Called Love) serves as character designer and lead animation director, while music is provided by Yoshiaki Fujisawa. The animation will be produced by the studio SILVER LINK.
About the game
The Case Book of Arne was developed by the team Harumurasaki and launched through the portal Game Magazine in November 2017. The title combines elements of mystery, fantasy and drama, focused on the relationship between a young human girl and a vampire who investigate supernatural cases in a fictional city.
have you played The Case Book of Arne or are you waiting for its anime adaptation?
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