Demons Are Rampant and I Am Invincible

The book is fake, and the introduction is also fake. I don't know how to practice the secret techniques and magic, but I have a sword that can break through thousands of techniques, kill all evil ghosts, and kill immortals and gods with one sword. You might die if I strike with my sword! If you don't care about life and death, do it if you don't accept it! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.