Eiserne Jungfrau is a collective of Furniture summoned by Erika Furudo in End of the Golden Witch. It is the 7th district Repentance Enforcement Agency of the Great Court of Heaven. The group is made up of Archbishop Dlanor A. Knox as leader, as well as several Assistant Inquisitors. The group is tasked with performing heresy interrogations, carrying out excutions, and sometimes bestowing redemption. However, in almost all cases, the Great Court of Heaven considers sending them only after the completion of a hersey interrogation and a tentative guilty verdict, so the group is essentially used as an execution squad.
The group is extremely well-known, even among other agencies, for their many achievements.
- Eiserne Jungfrau literally means "Iron Maiden" in German.