In accordance with a deal made with self-proclaimed "delivery service" and all-around mysterious entity known as Bumon, Mako has taken a job working as a lackey at the Bumon Delivery Corporation in "Mayoi" - the world of the gods. She was told that if she finishes up her assigned tasks and collects the stamps of approval for her various deliveries, then she'll be able to return to her own world, but... Get to work finding and collecting the various items requested in Mayoi. As soon as you've gathered the items, bring them to the workbench. Once you're finished packaging them, deliver them to the client. Rinse, repeat, and keep on going to see just how the story unfolds.