in the distant past there was a terrible battle between men and monsters. There was a hero, who was a central figure on the human side, who fell into the Dragonlord’s trap and was never heard from again. Having lost their mainstay, the humans were driven from the land in which they lived in this dark world, and their numbers decreased by the day. But time flows forward and our story begins when a young person appears in this ruined world ruled by the Dragonlord.