The only reference the wiki has is
https://practicalguidetoevil.wordpre...er-12-contest/, where the only real information is:
Mighty Kurosiv the All-Knowing, the Second General. It rarely bothered with deeper tactics than throwing warriors at the enemy but given the absurd amount of those within its sigil that tended to work regardless. I found the way it benefited from the deaths of its own and so encouraged them to be rather disgusting, and I suspected the Sisters felt rather the same for different reasons: Kurosiv had found a way to grow fat as a parasite nestled in the heart of the Night, exploiting the system they had built as no one else had before or since. Rumena had allegedly taken it as enough of a threat it’d exterminated its first five sigils, earning the epithet of Tomb-maker in the process, but it was telling that in the end it was not Kurosiv that’d settled in the Outer Rings.