Stormbringer

A time-traveling adventurer returns home with a peculiar artifact, only to find the journey has gone catastrophically wrong—a duplicate version of himself has materialized from the accident, emerging as the sinister Off-White Knight, a being known as the Stormbringer who wields a destructive storm cloud. Trapped in a paradoxical bind where direct confrontation would mean mutual annihilation, the original Magic Knight must pursue an unconventional path to survival by tracking down his dark counterpart and achieving a dangerous fusion between them.