Why were Heroes so much stronger than the people of this world, to the point that they were expected to defeat the Demon King?
It was because they possessed both powerful Holy Swords and Unique Skills.
There was no need to elaborate on the impact of Unique Skills on one's strength. It had been mentioned many times before: whether one possessed such a skill and how powerful it was could greatly affect one's abilities. Their importance even surpassed levels and other skills, making all manner of miracles possible.
Take Shien, for example. If he had not possessed the Unique Skill Heaven's Grace, how could he have treated Bedo, a powerful demon of level eighty-four, like a monkey to be slaughtered while only being level twenty-four himself?
When Shien mentioned that he possessed a Unique Skill, the others in the escort team no longer doubted that he had been capable of crushing Bedo. That showed just how great an influence a Unique Skill could have on a person.
Of course, Unique Skills could sometimes be completely useless, but Heroes were different from everyone else. They usually possessed exceptionally powerful Unique Skills, and that was one of their advantages.
Their second advantage was that they all possessed Holy Swords.
This divine artifact born from the very concept of a "Hero" had no less impact on one's strength than a Hero's Unique Skill.
An ordinary person possessing a Unique Skill could already see their strength greatly improved. If they also possessed a Holy Sword comparable to a powerful Unique Skill, how could they not be far stronger than others?
And if they were further blessed by beings on the level of the Three Great Goddesses, then with all three advantages combined, it would be impossible for a Hero not to be absurdly powerful.