The Blue Night

Transmigration, an occurrence that happened when a person went into another world either with their own body or not. But, it should be noted that, in no way that person would be related to the world, whether about their birth or past. It's a different world, after all. "How did your hair and eye colours changed so much, Olivia? Even your way of talking is different." What is this person saying? I don't even know him. I shouldn't have saved him then. "Who are you?"