No System, no golden finger. The protagonist is forced to work to save the world.
After the last survivor base was overrun, Xia Yichen fell into despair. He ate every last bit of food and drank every drop of water, then walked straight into the horde of corpses, ready to fight to the death. He had no desire to survive; he only wanted to die. But by chance, he was reborn one year before the outbreak. He had no grand ambitions, so he decided to run away to somewhere safe and comfortable, somewhere the zombies could never reach. But there was always someone determined to make life difficult for him. (This book is also known as I Work as an Agent in the Post-Apocalypse.)