So Ash and Serena first met in Prof. Oak's Camp in the Kanto region. But in the first episode we see Serena, she and her mom live in the Kalos region. So my question is whether Serena lives in the Kanto region first then moves to Kalos or does she live in Kalos all this time and simply went to Kanto for some kind of trip.
She was sent to Kanto. She said she didn't want to go, if I remember correctly.