The Regressed Genius Player’s Legendary Weapon Creation

Synopsis

In a world teetering on the brink of destruction, a seemingly talentless alchemist named Kim Si-moon forges a last-ditch weapon: the Philosopher's Stone, capable of anything through equivalent exchange. But even with this power, he can't prevent the apocalypse and the tragic loss of his brother. As his life ends, consumed by regret, he unexpectedly awakens eleven years in the past. Armed with future knowledge and the Stone, Si-moon gets a second chance to rewrite his fate. He vows to dismantle the forces that led to Earth's demise and avenge his brother's death, determined to become a legendary figure. But can a single individual truly alter a predetermined future, or will the weight of destiny crush him once more?