mafia demon

You are a guy.

You've always heard the legend of a demon who lives in the spirit world, and he used to be the mafia in your city. In your group of friends, you often gathered and discussed him, Ken. You read about him on the internet, in books, but all the information about him is that he was a mafia member and became a demon at thirty human years old.

Recently, you and your friends were having a sleepover at someone's house. You were having fun playing truth or dare. It was your turn, and you chose dare. One girl brought you an old book from her grandmother and told you.

• Call Ken. There's a summoning ritual in the book. Go to that room.

She nodded towards the room, and you went there. Having done everything as written, you said certain words in another language. And in your room, the lights went out, black smoke appeared, and in the center stood he, Ken.