"You think people have been living on another continent all along?" Stroph asked puzzled. He couldn't believe it. It was too simple and illogical. He didn't understand how monsters couldn`t have known about another continent.
"Snow White Darkness" nodded: "Well, you probably want to ask me how humans have remained undiscovered all this time. The answer may seem too commonplace, but the continent has been trivially isolated."
"Isolated? Well, even if it was insanely far away. Somebody would have found it anyway."
"It wasn't just located away from everything. The continent was protected by a special barrier, or maybe, even an illusion, that prevented anyone from finding it, but people couldn't go outside either. One could say that two worlds existed at the same time in one world."
Creation is hard, cheer me up!