When the gods failed to respond in humanity's hour of need, humanity resorted to a demon. The ostensible rescuer arrived brandishing the blade Zsoltgewinn, but its insatiable need for blood drove it to murder those who summoned it as well. Despite the fact that the sword had been hidden for a long time, it was discovered by the Shoshidai, a group that gathers cursed relics. Zsoltgewinn, on the other hand, demonstrates that it is too powerful to be tamed by humans when its corrupting power causes the administrator, Takuma Miura, to depart with it in his clutches.