The weakest regressor

Vincent Voss, the weakest link in the hero's party, watches in horror as his comrades fall before the Demon King's relentless fury. As the Demon King's axe descends, Vincent's world shatters, only for him to awaken five years in the past. Six months before he ever joined the doomed party, one year before the Demon King's reign of terror begins, Vincent is back in the familiar, yet terrifying, world of Alvion. Armed with the horrifying knowledge of the future and a mysterious ability to multiply his strength gain, Vincent must claw his way from obscurity. His ruthless resolve is fueled by the specter of past failure, forcing him to amass unimaginable power, not for glory, but for sheer, desperate survival against an inevitable apocalypse. Can he change fate, or is he merely prolonging the agony?