My Subordinates Are All Females

After the emergence of a mysterious game called 'New Possibilities', humanity entered a new era. In the game world, humans can obtain legacies of countless legendary being, but the truth behind it, wasn't so easy to obtain. Azrael, a 16 year old boy, decided to enter the game world seeing it as a chance to change his ordinary life. But what would happen when he gets the only unique legacy in the entire game? What would happen when he learns that his predecessor only accepted female subordinates? And that he cannot change this rule.