Synopsis：Kicked out of an S-class shelter as “dead weight,” Adam Reid figured his life was finished: no powers, no prospects, just a slow end in a world crawling with Wraiths. Then a voice echoed in his mind: “Underworld Management System online.” Overnight, he becomes the owner of the most lethal restaurant in the Wasteland. His ingredients? S-class Wraiths. His staff? Legendary reapers he’s bound to his service. His goal? Not survival, not heroism—just making a killing in every sense of the word, and savoring the sight of the mighty squirm.