Before coming to the Borderland, An was part of the forensics department in the Tokyo Metropolitan Police. Not much else is known about her previous relationships. Like everyone else that was sent to Borderland, she was forced to play games in order to survive. At some point in time, she either found or was found by The Beach. As shown in flashbacks, she was there when Hatter first made The Beach. Her great experience in the games gave her the position as one of the executive members of The Beac