Kill Everything in the Last Days

The apocalypse is coming, and in order to survive, my girlfriend snatches away my resources and throws herself into the arms of a strong man. When I was desperate, I bound the "Killing Upgrade System" so that I could become stronger by killing zombies. When my girlfriend's new love, a ninth-level superpower, led someone to block me, I was trampling an eighth-level zombie under my feet. "That's it?" I crushed the zombie's head and looked at them with pale faces. "Next, who comes first?" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.