Daakuseiken

Daakuseiken (also known as "Dark Society") is the major organization in the Darkworld and the main enemy of Keiseiken. Their agents are called Daakusenshi-tachi, or Dark Warriors. Its main focus is the absorbing of the souls and any magical energy from Light Warriors and Regular Humans from both Lightworld and Earthworld planes, as well as Golarion.

History
Not much is known about Daakuseiken's history, but it's common to know that Daakuseiken was formed from the Keiseken itself, and that it rebelled against them, because they didn't support the absorbation of the energy from the innocents.