I'm a Demonic Cultivator in the Real World

The demonic book opened... “Seal a world's passage, besiege a lesser race, and carry out a massacre to exterminate them. Gain 2 points of demonic origin.” “Three Great Sages of the demon race tried to seize a spirit treasure. Wound a demon sage and gain 4 points of demonic origin.” “Encounter an ancient ferocious beast and suppress it with one palm. Gain 6 points of demonic origin.” “Set up an origin formation and obliterate an undying king from another realm. Gain 8 points of demonic origin.” … After a serious illness, Chen Yuan found a demonic book in his mind. Looking at the words appearing on its pages, he had no idea how to respond. “You swat a mosquito after closing the door, and it calls that a massacre?” “You run into three monkeys stealing bananas at a tourist attraction, and they're Great Sages of the demon race?” “That big duck is an ancient ferocious beast?” “You trap a seven-year-old kid with a toy ring, and that's obliterating an undying king from another realm?” … “Wait, what do you mean I've become the wicked and unforgivable Demonic Emperor, the source of dark upheaval across the Myriad Worlds?” This book is also known as A Guide to Demonic Cultivation, No One Understands Demonic Cultivators Better Than Me, I've Cultivated the Demonic Path, So Why Should I Care What You Think?, This Demonic Cultivator Is a Little Strange, and Greetings, Demon Ancestor.