His name is Wan, and he is 17 years old. To be perfectly honest, he has been an assassin since he was 5 years old. He knows it's hard to believe, but it's true. He was - more precisely and literally - "the best assassin in the world." It makes sense because everyone he was supposed to kill ended up dead, whether they were some of the richest men in the world, crime lords, leaders of the underworld, corrupt or honest politicians, heads of organizations, cult leaders, or just ordinary people. Once he accepted a contract and decided to kill his target, he did so. However, he had limits: he wouldn't target children, single parents, or those who were depressed or suicidal. He said, "I have been an assassin since I was 5 years old," but he misspoke; he was an assassin from age 5, but for the past two and a half years, he has no longer been an assassin. And one day he teleported to the {parallel worlds} formed from this world and that of a novel he was reading a few days after seeing the ethereal arc "One day, on my way to school, I saw a gigantic semicircle in the sky. There was also a screen with strange symbols that I instantly recognized because they were from the work I've been reading for the past two years! Wan: (looks at the sky without saying anything) .... (continues walking) Hallucination, I didn't see anything, I'm ignoring it °... I'm not here..., no one sees me°"