The official website for the TV anime adaptation of Game Magazine’s The Case Book of Arne (Arne no Jiken-bo) mystery game confirmed the anime’s January 6, 2026 premiere. The anime’s cast and theme songs were also revealed with a new trailer and key visual.
The cast of The Case Book of Arne includes:
- Mariya Ise as Luis Hartman
- Kōki Uchiyama as Arne Neuntöte
- Aimi Tanaka as young Arne Neuntöte
- Yuka Nukui as Lynn Reinweiss
Singer Sou performs the opening theme song “Q.E.D.” and singer-songwriter Watashi Kobayashi performs the ending theme song “Ningyō no Machi (Doll Town).” Takeaki Wada, the composer of the original game’s theme song, arranged the ending song.
My Next Life as a Villainess: All Routes Lead to Doom! director Keisuke Inoue is directing the anime at studio SILVER LINK. Inoue is also co-writing The Case Book of Arne with Murasaki, the game’s original scenario writer and production. Trigun Stampede character designer Akiko Satō is also designing the characters of The Case Book of Arne, and she’s also the chief animation director of the anime. What’s more, Yoshiaki Fujisawa is composing the music of the anime.
Harumurasaki created The Case Book of Arne and launched it on Game Magazine’s website in November 2017. A manga adaptation was launched by Soraho Ina in Kadokawa’s Monthly Comic Gene magazine in 2018. Thus far, Kadokawa published four compiled book volumes of the manga series.
The game’s story focuses on the partnership between vampire detective Arne Neuntöte and Lynn Reinweiss, the daughter of a noble family who loves vampires. The pair investigate murder cases that may or may not involve vampires.
