How to Build a Dungeon: Book of the Demon King Vol. 8 (manga)

The Demon Lord Aur has transformed the dungeon itself into a golem, giving him absolute control over the terrain. Saint Melissand sends her army of angels to conquer the dark depths, but Aur's dark army fights with a ferocity only willing sex slaves can muster! It's a fierce battle between the Saint's almighty Heroic Souls and the Demon Lord's beautiful followers. Will this be the final step toward glory, or toward doom?!