A relentless killer, burdened with an uncontrollable thirst for bloodshed, finally meets his desired fate of death penalty. However, his elation is fleeting as he finds himself reborn in a new realm. Tasked by a divine goddess, his newfound purpose is to extinguish the lives of 12 reincarnated individuals, leveraging his dark inclinations. Amidst this mission, not all of these reborn souls embody virtuous intentions.