I Killed Every Infected Person from the Start, but Then the Demons Returned?

Protagonist Qin Feng returns from the future. Over the course of ten years, he has killed more than a hundred thousand people and earned a reputation as a murderous lunatic and super-criminal!

But in reality, he has taken all the sins upon himself, hoping to drag the world back into the light.

However, just as he wipes out all the bio-infected, demons suddenly unleash countless horrors upon the world. Monsters, demons, ghosts, and spirits run rampant. At this very moment, he awakens a sign-in Treasure Chest System!

Golden Light Spell, Golden Bell Shield, Thunder Fist, Eight Extremes Collapse, and countless epic-grade treasures appear one after another.

Ten-thousand-year-old zombie: "What's with this guy? His body is even tougher than mine?!"

Vampire progenitor: "What the hell! Why is this guy so vicious?! He's killed all my subordinates!"

Thousand-year-old snake demon: "With him around, how dare we invade the Nine Provinces?!"

This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Please do not imitate.