Yin He was accidentally brought to a post-apocalyptic world by something calling itself a System, which demanded that she complete its missions and build a new world. As soon as she landed in the wasteland, the System said, "I'm busy," and vanished, leaving Yin He all alone. What could she do? Even if she could survive in this dangerous world, she still had to eat. So she had no choice but to run the Hope Shop the System had left behind. In the fifth year of the apocalypse, a Hope Shop appeared in an abandoned city, stocked with all kinds of supplies. With the shop's help, people made it through disaster after disaster. Only then did they truly believe they weren't dreaming. Just as its name promised, the Hope Shop brought hope to people who had grown numb. Many years later, Yin He had long since completed her mission and returned to her own world, but her story was still told in the new world that arose after the apocalypse.
