Bone-Cutting Knife: I Kill Gods with Mortal Bones

On a rainy night, I knelt in front of the corpse holding a bloody boning knife. Three hours ago, I was a delivery boy struggling to make ends meet. Now, this bone knife from the murderer sucked the monster's blood, burning my soul to tremble. A pop-up window flashed on the phone: "The Mortal Bone God-Killing System is activated. The novice's mission: kill a 'Skinner'." Police sirens wailed in the alleyway, and I stared at the twisted remains of the monster on the ground. ——This knife is hungry.