The ultimate weapon requires the ultimate surrender.
Trapped inside a sealed dungeon with an unkillable raid boss battering down the iron doors, a master blacksmith and his elite, all-female adventuring party have only one hope for survival. They must use the Abyssal Forge. But standard ore won't work in this dungeon. To craft the legendary weapons they need to survive, the forge demands pure, concentrated mana.
And that mana can only be extracted from a willing host through extreme, prolonged physical ecstasy.
From a lithe, energetic rogue to a haughty sorceress and a stoic, heavily muscled paladin, the blacksmith must use his hands, his mouth, and his relentless stamina to turn his party's bodies into raw material. As the boss hammers at the gates, he will forge an unbreakable harem—one shattering climax at a time.