I'm a Ghost Demon in Tokyo

When I woke up, lying in Tokyo, I found that I had become a ghost demon, the kind that turns into a 3D code when it is beaten. The first day I became a Nether Demon: I was 18 years old. I was afraid of the armored warrior and almost starved to death on the street. The second day after becoming a ghost demon: I was fed by the kind and beautiful chef sister and managed to survive. From then on, I decided to become a good ghost demon. The third day after becoming a Nether Demon: I picked up a wild armor summoner. The fourth day of becoming a Nether Demon: Discovering that he has the ability to transform others into Nether Demons. The nth day of becoming a Nether Demon: What is an armored warrior? None of you have heard of it? Am I the only purebred Nether Demon? Day 2n of becoming a ghost demon: I don't eat beef! Ps: I am the only devil, I am the only one, the black hand