Astrea Record: Dungeon ni Deai wo Motomeru no wa Machigatteiru Darou ka - Eiyuutan  

7 years ago, there was chaos instead of peace in the world. During the Dark Era of Orarios, people killed each other with blood. However, to stop the city's suffering, a family representing justice emerged. This is about families who experienced the darkness of that time period.

Astrea Record: Dungeon ni Deai wo Motomeru no wa Machigatteiru Darou ka - Eiyuutan is an adaptation of the story event Idai Boukentan: Astrea Record, written by Fujino Oomori, from the Dungeon ni Deai wo Motomeru no wa Machigatteiru Darou ka: Memoria Freese mobile game.