Six new cast members and a preview video have been revealed for the upcoming The Case Book of Arne TV anime series. The anime will premiere in Japan on January 6, 2026.
The six additional cast members (from left to right below) joining the series include:
- • Hiroshi Naka as Gordon
- • Reo Osanai as Diana
- • Momoka Terasawa as Elise
- • Rikuya Yasuda as Bernd
- • Yuto Uemura as Heinz
- • Kakeru Hatano as Kai
Meanwhile, the anime’s previously announced voice cast stars:
- • Mariya Ise as Lewis Hartman
- • Koki Uchiyama as Arne Neuntöte
- • Aimi Tanaka as Arne Neuntöte (young)
- • Yuka Nukui as Lynn Reinweiss
- • Yuki Sakakihara as Zisye
- • Yuki Shin as Nachzehrer
- • Yoko Hikasa as Amy
In addition, Soraho Ina will launch a new manga adaptation of the show’s episodes titled The Case Book of Arne: Memory of Blood on Bushiroad Works’ Comic Growl website, starting on January 7, 2026. Ina previously worked on the first manga series, which was launched by Kadokawa in November 2018 and ended in March 2022. Four total tankobon volumes were published in Japan.
Keisuke Inoue (My Next Life as a Villainess, the upcoming My Stepmother and Stepsisters Aren’t Wicked) is directing the anime series and serving as co-series composer, with Murasaki co-series composer, Akiko Sato (A Condition Called Love character designer) as character designer and chief animation supervisor, and Yoshiaki Fujisawa (Takopi’s Original Sin) as music composer. SILVER LINK is handling the animation production.
The Case Book of Arne is inspired by the 2D mystery-adventure game created by duo Harumurasaki (consisting of writer Murasaki and artist Harutaro). The game first debuted in 2017 on the Game Magazine website (who is also credited as a developer) with a serialized format, before being released on Steam in October 2020.
Steam describes the main synopsis of The Case Book of Arne video game as:
Arne Neuntöte is a vampire detective who manipulates supernatural powers. Lynn Reinweiß is a nobleman’s daughter who loves vampires.
Their worlds should never have crossed, but they join hands to solve a bloody mystery.
In the darkest of nights, Lynn finds herself in desperate need of help. Then she wanders into the mysterious city of “Lügenberg”, where non-humans live.
Lynn’s world changes drastically when she encounters “Arne”, a vampire who is called “the worst” in the city.
And tonight, a new “murder case” has occurred.
What is the truth behind the bizarre incidents that take place in a world where humanity and the bizarre intersect?
“Come on, human. You may dance merrily under the crimson moon.”
Sources: The Case Book of Arne Official Twitter, Anime News Network
