01① Legendary Vampire × Vampire Otaku Lady Mismatched Buddy
The banter between Arne, the cool and mysterious legendary vampire, and Rin, the passionate young lady devoted to him, is fantastic.
Under the belief that "mystery-solving is to be enjoyed," watching Arne demand clients' blood as payment and Rin going all-out as a vampire otaku never gets old 🦇💜
02② Fusion of Authentic Mystery & Gothic Fantasy
Cases unfold in a world where the logic of both humans and supernatural beings dance together.
Not just a mystery, but an attractive gothic worldview featuring vampires and supernatural beings.
The deduction parts are also authentic - the original game received over 1,300 submissions for the culprit-guessing quiz 🔍
03③ Triple Protagonists with Anime-Original Elements
In the TV anime version, anime-original character Louis Hartmann appears.
Louis, who lost his detective father to a serial murder case and became alone in the world, is depicted meeting Arne and Rin and challenging case solving together.
Structured to be enjoyable for both original fans and newcomers ✨
04④ Stellar Staff & Cast
Director is Keisuke Inoue from "My Next Life as a Villainess: All Routes Lead to Doom!" series.
Animation production is by SILVER LINK.
The cast includes stellar voice actors like Koki Uchiyama, Aimi Tanaka, Yuka Nukui, and Mariya Ise 🎭
06① The Mystery of Arne's "Nine Hearts"
Long ago, Arne was the "most fearsome" vampire created when nine powerful vampires combined their hearts into one.
For certain reasons, he had lost eight of the nine hearts, but currently has recovered one, now possessing two hearts total.
The whereabouts of the remaining hearts and why they were lost is important foreshadowing 🫀
07② Rin's Mother Rose's Memento Pendant
The pendant Rin always wears is a memento from her beloved mother Rose, who passed away 2 years ago.
Arne apparently recognizes it, but the reason hasn't been revealed yet.
Watch for what past connects Rin and Arne 💎
08③ "Grave-Digger Vampire" Serial Murder Case
In the anime version, the story begins with the serial murder case by the "Grave-Digger Vampire" who killed Louis's father.
As Louis, who doesn't believe in superstition, witnesses supernatural beings firsthand, the worldview greatly expands.
This case becomes the catalyst for the three's meeting 🪦
09④ Appearance of Nachzehrer
ED artist Watashi Kobayashi has expressed explosive joy that fan-favorite character "Nachzehrer" will be seen in the anime.
Original fans should especially watch for how he appears 👀
10⑤ The Existence of Phantom Thief Red Riding Hood
The original game also features a character called "Phantom Thief Red Riding Hood."
Numerous cases await Arne and friends, including the incident where she became a vampire.
Look forward to how much will be depicted in the anime 🎭
11① The Beginning of the Story
"There are two types of people in this world. Those who believe in supernatural beings... non-human entities, and those who don't."
Louis Hartmann lost his detective father to a serial murder case and became alone in the world.
While the case is rumored to be by the "Grave-Digger Vampire," Louis, who doesn't believe in superstition, resolves to catch the culprit himself 🔍
12② Meeting Arne and Rin
Appearing before him are Arne Neuntöter, who calls himself a detective, and his assistant Rin Rheinweiss.
A new door was about to open before Louis.
Adventure begins in "Ryugenberg," the town where supernatural beings reside 🦇
13③ Original Game Developments
In the original game, multiple cases unfold starting from Case 1.
In a world where the logic of humans and supernatural beings dance together, Arne and friends uncover the truth hidden behind bizarre cases.
User-participation culprit-guessing quizzes were also held with great success 🎮
14📺 TV Broadcast
Premiere: January 6, 2026 (Tuesday) late-night start
Nippon TV: Every Tuesday late-night 25:29~ (Every Wednesday 01:29~)
BS Nippon TV: Every Wednesday at midnight
AT-X: Every Wednesday at 9:00 PM
AT-X Repeat: Every Friday 9:00 AM / Every Tuesday 3:00 PM
12 episodes planned 📺
15🌐 Streaming Services
Also available on various streaming services:
• Details will be announced on the official site
Check official X (@arne_jknb) for the latest info 🦇
16Arne Neuntöter (CV: Koki Uchiyama / Aimi Tanaka)
The "legendary vampire" running a detective agency in a town where supernatural beings reside.
Under the belief that "mystery-solving is to be enjoyed," he demands clients' blood as payment.
Long ago, he was the "most fearsome" vampire created when nine powerful vampires combined their hearts into one.
His adult form is played by Koki Uchiyama and boy form by Aimi Tanaka in double casting.
🔥Fun Fact: The name "Neuntöter" likely derives from "Neun," German for "nine," relating to his nine-hearts setting 🦇
17Rin Rheinweiss (CV: Yuka Nukui)
The only daughter of the prestigious noble Rheinweiss family.
Since losing her mother Rose 2 years ago, she has learned modest behavior befitting a noble daughter.
Bright and loving personality with good intuition, quickly noticing when people hide things.
The pendant she always wears is a memento from her beloved mother, which Arne apparently recognizes.
And... she's a full-on vampire otaku! "Every!! Bloody!! Eternity!! Neuntöter!!"
🔥Fun Fact: She has multiple outfit variations including "Lady Mode," "Jersey Mode," and "Dress Mode" 👗
18Louis Hartmann (CV: Mariya Ise)
An anime-original character.
Lost his detective father to a serial murder case and became alone in the world.
While the case is rumored to be by the "Grave-Digger Vampire," Louis, who doesn't believe in superstition, resolves to catch the culprit himself.
Meeting Arne and Rin, a new door is about to open.
🔥Fun Fact: Mariya Ise commented "I strived to carefully express the atmosphere and emotional fluctuations that the character Louis possesses" 🔍
19Gishe (CV: Yuki Sakakibara)
A character involved with Arne's office.
A popular character in the original game, with expected activity in the anime.
🔥Fun Fact: Among fans, Gishe sometimes gets involved in the fantasy scenario "Lord Arne gives triple return gifts on White Day" 🎁
20Nachzehrer (CV: Yuki Shin)
A character with tremendous popularity among original fans.
ED artist Watashi Kobayashi also commented with joy "So Nachzehrer can be seen in the anime? That's so great..."
🔥Fun Fact: "Nachzehrer" is a type of vampire from German folklore, said to eat their own burial shroud after death 👻
