By chance, Ichigo Kurosaki gained the abilities of the god of death and was dubbed the "agent Soul Reaper." He grew up in the corpse world, the location where the spirits of those who have died in this lifetime congregate. And at this point, the Nether Empire formally declared war on the death god. Five days later, the "invisible empire" destroyed the corpse world. For a millennium, fate has been the Grim Reaper's burden. Finally, their causality and underlying truths are revealed. It's all going to end. The final battle of Kurosaki Ichigo begins.