かつて人類は、四人の魔王が率いる魔族との戦争に敗れ、七本の聖剣の守護のもと、わずかに残された土地で生き延びていた。
女神が残した七本の聖剣を模倣して作られた数多の「模造聖剣」を手に、人類は今も襲い来る魔族たちと戦いながら暮らしている。
これは、聖剣こそ至上の世界で「落ちこぼれ」の烙印を押された少年・ロイと、四人の魔王に封じられた最強最悪の魔王が世界を救う物語。
Once upon a time, humanity lost a war against the demons led by four demon lords, and survived on what little land was left under the protection of the seven holy swords.Humanity continues to live its life fighting against the attacking demons, armed with numerous “imitation holy swords” made in imitation of the seven sacred swords left behind by the goddess.This is the story of Roy, a boy who is branded as a “fallout” in a world where the holy sword is the ultimate, and the strongest and worst demon lord who is sealed away by four demon lords and saves the world.
