Won't There Be A Problem If The Hero Is Such A Horrible Person?

This is a miserable world ruled by the Demon King. However, the God of Creation gave the enslaved humanity a sliver of hope. A Holy Saint will be born every hundred years. The one who has the Holy Maiden's first kiss will become the Hero and lead humanity to topple the Demon King. During the Hero Trial that happens once every a hundred years, a strong but unruly man appeared. Disrespecting the trial and not lending a hand to the helpless villagers when the village was attacked by monsters! He keeps talking about getting the Holy Maiden and saving the world but is this kind of person the Hero humanity has been waiting for!?