In the vast and diverse realm of the Netherworld, countless demons vie for supremacy.
Within one such domain—the illustrious Nueur Netherworld—the mercenary veteran is summoned by its reigning Overlord, Tisiel, and entrusted with a shocking mission.

"Someone ate the pudding from the refrigerator!"

"I see… wait, the what from the refrigerator?"

This pudding, known as the First Radiance Pudding, was a creation of Tisiel’s late father, the former Overlord. It was devoured by a treacherous subordinate, and Tisiel demands its retrieval.

Thus begins an unlikely struggle: a battle for the First Radiance Pudding, fought by a solitary mercenary and a fledgling Overlord.