The title of “Hero” is a theme within the world of Monster Girl Quest. While it is initially defined as those who are blessed by Goddess Ilias, its definition is later shaped by some NPCs as well as Luka and Alice; the Inn owner of Iliasburg claims a person is defined as a hero by his/her actions, while Luka and Alice state that a hero is those who fight for others to the bitter end.
Ilias only provides her blessings on the day of her birthday. It is said that she descends from the heavens to bless a human into a hero.
Those who have been blessed by Ilias are said to have their semen taste like angel liver, which Alice hints to be very repulsive. Although this makes them safe from erotic attacks, heroes are more prone to physical attacks as well as being devoured as they can’t offer use as a source of food.
In addition to being somewhat monster resistant, the title of a hero provides various perks. For example, heroes can stay at inns or shop for items for free or at sharpy reduced prices, or being able to demand audiences from royalty members without having to be recommended to them first.
However, people who have wielded the title have actually taken advantage of it. For example they have entered homes and freeloaded from it which may include theft.
Being blessed does not necessarily give humans the firepower to overcome monsters. This is supported by Granberia’s Monsterpedia Entries, claiming that there are many poor, unskilled human soldiers.