Resurrection of Spiritual Energy: Sign in and Kill at the Beginning

A time when spiritual energy is revived and demons are rampant. Humans and demons are constantly at war, and fairy messengers emerge as the times require! They signed a contract with the kind-hearted demons and fairies, and they can borrow the power of the demons and fairies... Lin Yao traveled to this world and was lucky enough to become the contracted fairy of a noble fairy messenger... Lin Yao refused at first, but later, it smelled so good... Because he suddenly discovered that his contract partner was actually the legendary fairy body! "Ding, congratulations to the host's fairy body for signing in for the first time! Obtained a hundred years of demon power and awakened the bloodline of the Howling Moon Sirius." "Ding, congratulations to the host who signed in as a fairy spirit for one year, gained a thousand years of demon power, and was successfully promoted to the demon king!" "Ding, congratulations to the host who has signed in as a fairy spirit for ten years, gained ten thousand years of pure demon power, and been promoted to a demon immortal..." When monsters invaded Jiangzhou City in large numbers, 20-year-old Mu Xue discovered that the cold and arrogant lone wolf next to her was actually a monster with terrifying power... Ps: The introduction is weak, please read the text! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.