It's about a dark mage or sorcerer something where the world has dark mages and like light users and the mc is like a dark mage whore where in the start he has a delivery and he does the deed with the mailman and also they seek to find like crystals that get corrupted something and he frees the like the demon king something and like he mates with the monsters that guard the crystals
It's about a dark mage or sorcerer something where the world has dark mages and like light users and the mc is like a dark mage whore where in the start he has a delivery and he does the deed with the mailman and also they seek to find like crystals that get corrupted something and he frees the like the demon king something and like he mates with the monsters that guard the crystals