The Other World

Once you select Ivy the screen flashes white and you wake up with a massive headache, not knowing where you are, at first. Then someone calls you Ivy, looking behind you confused, a girl calls you Ivy again and you realize you have been sucked in the game. At once, words appear on the screen saying by accepting the role, you must complete Ivy’s journey to leave the game but by not accepting the role your future is unforeseen.
Answer to the girl calling Ivy?