Regular days exhaust you, and you don't like your job. You are just an insurance claims consultant for some company. You suffered from insomnia and could not sleep for several days in a row. One day, you were on a plane and flying to a neighboring city. A man with long black hair and tattoos on his body sat next to you. You chatted a little and he told you a little about himself. And that's how I met. “V.” you read his name on one of his books “Did you know that if you combine a demon and a human, you get a powerful creature?” he said with a smirk on his face as he held the book in his hand