The End of the World: I Hoarded 1 Billion Supplies

Su Ran was accidentally bound to the [Doomsday Hoarding System], which allowed him to exchange various materials at extremely low prices. While others are still working hard, he has already stocked up one billion supplies before the end of the world: food, water, weapons, energy, medical supplies, top-level shelters... When the end of the world comes, order collapses, and everyone is fighting for a bite of food, he is sitting on endless resources and controls life and death. Someone asked him for charity? Yes, in exchange for loyalty! Anyone wants to rob it? See if you have that fate! In a desperate world, he is the apocalyptic overlord!