The End of the World: I Was Chased by Zombies for Five Kilometers at the Beginning

Why do you always ask me to lure away zombies? At dusk, the protagonist is in danger again, but this time he is caught by zombies... During the crisis, the protagonist used a picked-up black box to complete a desperate counterattack, but by chance, the system got involved, so... He began to live a hard life of doing tasks, searching for stone tablets, and saving his fellow tribesmen, but the most desperate thing was taking care of his half-sister.