The End of the World Is Coming: the System Made Me Make Millions of Enemies at the Beginning

On the last day of school, blood enveloped the world and the world mutated. Zombies appeared, and the zombie wave swept the world. The rules and order of the old era were instantly broken. At this point, twenty years of hard study have turned into a piece of waste paper. Shi Lei knew about a hidden supermarket warehouse, but before the plan to survive in the warehouse was implemented, it was broken by the system's words. Danger is approaching. The enemies Shi Lei has to face are not only bloodthirsty zombies, but also the same kind who are greedy for his system!