Courier from All Realms: Delivering the Most Treasured Treasure at the Beginning

The protagonist has obtained a mysterious takeout/delivery system that can connect all the worlds. It can not only deliver food to mortals in this world, but also receive strange orders from the fantasy world, the fairy world, the magic world, the future world and even the Cthulhu world. The process of food delivery/delivery itself is a huge adventure and opportunity, and the rewards are amazingly generous.