Synopsis
For millennia, humanity and demonkind have been locked in conflict, dividing the continent of Leunders into two halves. Though a fragile stability once existed between the races, that peace shatters when the new demon king launches a brutal full-scale assault. Within a year, every non-demon nation falls to the violence, leaving humanity's last hope resting on a special squad led by swordsman Kyle Leonard, tasked with assassinating the demon king to end the war. On this perilous mission, Kyle clashes with the demon king and is pushed to the verge of death. Realizing he has lost everything he sought to protect, a mysterious gem sends him back in time to before the conflict even began! Armed with knowledge of future events and a burning desire to save his loved ones, Kyle sets out to grow even stronger and prevent humanity's extinction.