A Hero Emerges

A land covered by a massive fog, demons have so plagued this realm and called it their home many brave warriors have crossed into the fog believing that they may be the ones to free the land of this nightmare, to be the hero to save the land, and (Y/n) is no different braving the fog and encountering many different types of demons and dangers though he would not be alone as he ends finding an ally a female knight who found herself trying to brave the fog as well, have the land found its saviors or have the demons found themselves another slave?