In this world, creatures like vampires and werewolves still walk about, but Aya Rindo can’t say the same for herself. This beautiful disembodied head, carried by her maid Shizuku Hasei, is a detective in search of her stolen body. One evening, they meet half-human Oni Slayer Tsugaru Shunichi, who offers a lending hand. Now, the trio is traveling through Europe, solving mysteries along the way.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Oni Slayer | 2023-07-05 | 23 min |
| Season 1 | Episode 2 | Vampire | 2023-07-12 | 23 min |
| Season 1 | Episode 3 | The Immortal and the Oni | 2023-07-19 | 23 min |
| Season 1 | Episode 4 | The Headliner Appears | 2023-07-26 | 23 min |
| Season 1 | Episode 5 | The Immortal of London | 2023-08-02 | 23 min |
| Season 1 | Episode 6 | The Phantom Thief and the Detective | 2023-08-09 | 23 min |
| Season 1 | Episode 7 | Free for All | 2023-08-16 | 23 min |
| Season 1 | Episode 8 | The Banquet | 2023-08-23 | 23 min |
| Season 1 | Episode 9 | Werewolves | 2023-08-30 | 23 min |
| Season 1 | Episode 10 | Misty Hollow | 2023-09-06 | 23 min |
| Season 1 | Episode 11 | Where the Wolves Dwell | 2023-09-13 | 23 min |
| Season 1 | Episode 12 | Where the River's Flow Changes | 2023-09-20 | 23 min |
| Season 1 | Episode 13 | The Culprit's Name | 2023-09-27 | 23 min |
| Writing | Yugo Aosaki | Novel |
| Directing | Mamoru Hatakeyama | Series Director |
| Writing | Noboru Takagi | Series Composition |
| Visual Effects | Noriko Ito | Character Designer |
| Visual Effects | Naho Kozono | Character Designer |
| Sound | Yuma Yamaguchi | Original Music Composer |
| Sound | Kazuhiro Wakabayashi | Sound Director |
| Art | Teru Sekiguchi | Art Direction |
| Art | Riku Sato | Art Direction |
| Camera | Tomoyuki Shiokawa | Director of Photography |
| Visual Effects | Chiho Nakamura | Color Designer |
| Visual Effects | Tomohiko Kan | CGI Director |
| Editing | Rie Matsubara | Editor |
| Visual Effects | Noriko Ito | Supervising Animation Director |
| Visual Effects | Naho Kozono | Supervising Animation Director |
| Production | Daisuke Kawakami | Producer |
| Production | Makoto Fujimoto | Producer |
| Production | Mitsuharu Moriya | Producer |
| Production | Katsuya Watanabe | Producer |
| Production | Ge Yangqian | Producer |
| Production | Yasushi Kuwata | Producer |
| Production | Asa Suehira | Producer |
| Art | Shoshi Ishikawa | Prop Designer |
| Production | Miyuka Kidachi | Publicist |
| Editing | Akane Shiraishi | Assistant Editor |
