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 |
| Directing | Yoshiki Kawasaki | Series Director |
| Writing | Shogo Yasukawa | Series Composition |
| Visual Effects | Keiko Tamaki | Character Designer |
| Sound | Jin Aketagawa | Sound Director |
| Sound | MICHIRU | Original Music Composer |
| Writing | Mato Sato | Comic Book |
| Sound | Mili | Theme Song Performance |
| Sound | ChouCho | Theme Song Performance |
| Visual Effects | Yoshiki Kawasaki | Opening/Ending Animation |
| Visual Effects | Kenichiro Aoki | Opening/Ending Animation |
| Camera | Shingo Fukuyo | Director of Photography |
| Art | Teruhiko Niita | Art Direction |
| Visual Effects | Ayasa Okada | Color Designer |
| Visual Effects | Issei Shibayama | 3D Director |
| Editing | Kentaro Tsubone | Editor |
| Art | Ryo Hirata | Prop Designer |
| Visual Effects | Keiichiro Saito | Opening/Ending Animation |
| Visual Effects | Shinjiro Kuroda | Opening/Ending Animation |
