The Executioner and Her Way of Life Novel Volume 8 was written by Mato Sato and features illustrations by Nilitsu.

Menou and her group venture deep into the City of Ruins to reach the Astrologer, who controls the Starhusk. Instead of finding the ultimate weapon to defeat Hakua, they discover a lost one who should've died a thousand years ago. And she's not the only one hiding below. Genom Cthulha has left the Mechanical Society to set himself up in the ancient city. Does Menou stand a chance against an enemy even Master Flare couldn't beat?