There Are Demons All Around. Is It Normal for Me to Kill a Demon?

[Undercover + Micro Thriller + Violent Aesthetics + Cammy] Shen Ye traveled to this world, and as a human being, he lived among the demons for eighteen years. He has been waiting for Golden Finger to arrive all these years, and then he will vent all his depression! Now that he has obtained the [God-Killing Way] that can make him stronger by killing demons, from then on, a demon-loving man appeared in the world who made the demons fearful! At the same time, you have to break into many black death realms [horror dungeons], solve the demon souls, gain the power of rules, and kill the entire world. The devil wanted to find out who that human being was. Shen Ye just smiled disdainfully, "I can survive without the golden finger. Do you think you can kill me?" What else can be done? I can kill demons and become a god! Disguise yourself as a demon, enter the demon's academy, and kill the demons while harvesting their wool to become stronger. It's useless even if God comes, I'll just kill the God! "No, you can't laugh yet, I have to hold it back! You are going to die soon!" … The rules of the devil: 1. Most demons pretend to be humans 2. Revealing the identity of their demon will reveal their true form 3. The demons will kill the humans they find Black Death Realm Rules: 1. Only by finding the body of the dead demon soul or finding the truth can you get out. 2. People who die in the realm of black death will become one of them and experience pain in countless reincarnations. 3. Key NPCs are mixed in, so don't kill NPCs in the Black Death Realm unless necessary. 4. The power of rules is mysterious and strange. Gods may be killed by the power of rules when they come.