Holunder

The Holunder (闇会議 (エルダー), Erudā; German for "Elders", Japanese for "Dark Council") is the advising council to the king of the Königreich, Harkon. They also act as superiors to the other members of the organization.

Overview
This division of the Königreich consists of three members only. Along with Harkon, each of these three members assisted in the founding of the Königreich. Each are captain-level combatants and act as supervisors to the rest of the organization. Their main duty is to advise Harkon on matters of running the Königreich. Each of its three members also possess the title of Stadtrat (悪鬼論者 (さんじ), Stadrād; German for "Councillor", Japanese "Devil's Advocate").

Headquarters
The Holunder has its own, unique headquarters, separate from Castle Harkon, the main headquarters of the organization. It is also located in the Human World, in a mountainous wasteland located in the Königreich's territory. It is a castle that is literally carved out of the mountain it is stationed on and is physically larger than the main headquarters. Harkon is known to visit during his down time. Not much is known of its interior design other than the fact that the council's chambers are located within.