Ash, a storied mercenary renowned for surviving countless battles where others fell, finds himself adrift in a world at peace with no wars left to fight. Drawn by a mysterious white butterfly toward the cursed land of Zamhan, he discovers a realm trapped between existence and oblivion, where grief and rage have spawned unfathomable chaos. This crawling world, consumed by endless resentment and despair, offers only suffering and ruin—yet it may be the only arena left where Ash can confront what truly drives him.