Reborn: I Became a God of Slaughter in the Apocalypse

The zombie virus breaks out, and global order collapses. Chen Yang struggles through the apocalypse in his previous life, only to die in a decisive battle with the Zombie Emperor. By a stroke of fate, he is reborn in high school, one month before the zombie virus outbreak, and awakens the Apocalypse Godslayer System. In this life, I, Chen Yang, won't let the tragedies of my previous life happen again. But more terrifying than the Apocalypse itself is the human heart.