| Title | Format | Country | Volumes | State |
|---|---|---|---|---|
| Contes Féeriques, par Shiitake | Fairy tale | France | 1 | Completed |
| Contes Merveilleux | Fairy tale | France | 1 | Completed |
| Et la Nuit Devint Bleue | Picture book | France | 1 | Completed |
| Jinrui wa Suitai Shimashita人類は衰退しました | Light novel | Japan | 6 | Unfinished (suspended publication) |
| Jinrui wa Suitai Shimashita人類は衰退しました | Light novel | Japan | 11 | Completed |