The Lost Ones are wanderers who come here from a distant world known as "Japan." No one knows how or why they leave their homes. The only thing that is certain is that they bring disaster and calamity. The duty of exterminating them without remorse falls to Menou, a young Executioner. When she meets Akari, it seems like just another job...until she discovers it's impossible to kill this girl! And when Menou begins to search for a way to defeat this immortality, Akari is more than happy to tag along! So begins a journey that will change Menou forever...
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | The Executioner | 2022-04-01 | 24 min |
| Season 1 | Episode 2 | The Lost One | 2022-04-08 | 30 min |
| Season 1 | Episode 3 | Taboo in [Red] | 2022-04-15 | 30 min |
| Season 1 | Episode 4 | The Ancient Capital Garm | 2022-04-22 | 30 min |
| Season 1 | Episode 5 | Goodbye | 2022-04-29 | 30 min |
| Season 1 | Episode 6 | [Regression: Memories, Soul, Spirit] | 2022-05-06 | 30 min |
| Season 1 | Episode 7 | Port City of Libelle | 2022-05-13 | 30 min |
| Season 1 | Episode 8 | Monstrine | 2022-05-20 | 30 min |
| Season 1 | Episode 9 | At the Evening Ball | 2022-05-27 | 30 min |
| Season 1 | Episode 10 | The Daughter of a Lost One | 2022-06-03 | 30 min |
| Season 1 | Episode 11 | Pandaemonium | 2022-06-10 | 30 min |
| Season 1 | Episode 12 | The Duo's Journey | 2022-06-17 | 30 min |
| Visual Effects | Keiko Tamaki | Character Designer |
| Directing | Yoshiki Kawasaki | Series Director |
| Sound | Jin Aketagawa | Sound Director |
| Writing | Shogo Yasukawa | Series Composition |
| Sound | MICHIRU | Original Music Composer |
| Writing | Mato Sato | Comic Book |
| Sound | Mili | Theme Song Performance |
| Sound | ChouCho | Theme Song Performance |
| Visual Effects | Ayasa Okada | Color Designer |
| Visual Effects | Kenichiro Aoki | Opening/Ending Animation |
| Art | Teruhiko Niita | Art Direction |
| Visual Effects | Issei Shibayama | 3D Director |
| Visual Effects | Keiichiro Saito | Opening/Ending Animation |
| Editing | Kentaro Tsubone | Editor |
| Art | Ryo Hirata | Prop Designer |
| Camera | Shingo Fukuyo | Director of Photography |
| Visual Effects | Yoshiki Kawasaki | Opening/Ending Animation |
| Visual Effects | Shinjiro Kuroda | Opening/Ending Animation |
