A Secondhand Shop Opens Across the Small Worlds

Wan Miao died saving her little nephew. After death, she was bound to a secondhand shop System and began completing missions in various small worlds. From then on, Wan Miao worked hard and diligently, while System 999 did absolutely nothing every day, like a fool of a landlord's son. When will this kind of life finally end? My nine-to-five! (*꒦ິ⌓꒦ີ) First small world: the Beast World. They don't understand how resources regenerate and keep taking without giving back, so plants and animals can't reproduce fast enough to meet their needs. To help them reach the next stage, Heaven issues a mission to survive the famine. Second small world: the interstellar era. People generally live long lives and their technology is far ahead of ours, but they all suffer from genetic diseases. No new life has been born for hundreds of years. Seeing only people disappear and none being born, Heaven panics. Third small world: the apocalypse, a forest feast at the end of the world.