My System Responds to Requests

Strange gray fog suddenly appears, where do they come from? Where did the strange whispering sound in my mind come from? Why did the cute pets who were originally cute and fearful of humans mutate overnight and become ferocious beasts of the night that choose and devour humans? Why did the human race's technology, which had already begun to take shape, lose its glory overnight and become nothing of yesterday under the wash of the sea of ​​beasts? Su Nan, who has been living at the bottom of society and suffered bullying because of his character flaws, what will he do in such a doomsday scene after possessing the system? What kind of unknown and shocking secret is hidden under this sudden doomsday? ... "The ferocious beasts are just lambs to be slaughtered, and the flowers of the feast of slaughter are about to bloom!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.