Goblin Lord Wants Me to Become a Virgin Wizard by Managing the Brothel!

According to rumors from human villages, a man who remains a virgin until the age of 30 and observes the passion of others is destined to become a great mage.
Taking advantage of this, the Goblin Lord decided to try the most unusual method of attaining power: he appointed his “purest” warrior to run a brothel deep within the caves of his lair.
Your goal is to turn this establishment into the perfect machine for producing an army, using intrigue and procreation.