Reborn on the eve of the apocalyptic rainstorm, my sister snatches the system that is enlarged 100 times, and is sure to control the chance of survival. No one knew that I had already held on to the memory of my previous life, secretly stocking up on supplies and fortifying the safe house. When heavy rain flooded the city and order collapsed, my sister's system was unable to withstand the real crisis, but I relied on thorough preparations to survive steadily. In this survival game between sisters, who can make a comeback in a desperate situation?
