New Saga

Kyle Leonard, a skilled swordsman, leads a special squad tasked with assassinating the new demon king who has launched a devastating attack, threatening the fragile peace between human and demon nations. The mission goes awry, and Kyle finds himself at death's door after a confrontation with the demon king. A mysterious gem intervenes, sending Kyle back in time before the start of the conflict, where he seeks to use his knowledge of future events to prevent the extinction of humanity and save his loved ones.