Can a Brave Man with Bare Hands Tell a Story of Kingship?

If the holy sword is destroyed, will the hero disappear? If there are still heroes, without the Holy Sword, will they still be the Demon King's opponent? If a person brings nothing with him and tells you that he wants to defeat the devil, you will most likely think that he is a lunatic, right? Can a brave man without a holy sword and no magic really have any hope of defeating the Demon King? In the eyes of 80% of humans, there should be no chance... However, there will always be people who don't believe in this evil!