Well, I'm just responding to a request from one of my amazing followers @Hino1Hyuga
Hope you like it as much as my first one!
Nagisa lives in a small apartment building with his sickly mother. Desperate for money to help cure his sick mother, he lives out on the streets, trying to find something to do for money. He didn't have any relatives left, and everyone else thought he was a monster since he accidentally killed someone when he was younger. He didn't go to jail but most of his family left in case they were convicted. So now Nagisa has nothing left to do but die himself. One day, on a cold day in the streets, he meets an elderly old man. He said to take his one possession, a knife. Thinking that this was the least he could do for someone's dying wish, he took it. Instantly when the knife touched his hand, a person with red hair came out.
The demon was here.