Rebirth at the End of the World: Store System Binding

The day before I was reborn into the apocalypse, I crazily hoarded instant noodles and toilet paper. Others fight zombies and upgrade, while I set up a stall and sell goods as a middleman. When the strongest god of war exchanged my S-class crystal core for my last bucket of braised beef noodles, the system suddenly prompted: "Congratulations to the host for unlocking the ultimate authority——" I looked up at the superpowers kneeling on the ground and smiled: "Now, who wants to negotiate terms?"