エリカ・ワーグナー

Almost a year before the Arcade Story takes place, Wagner receives a punishment for her action. Adelheit orders her to transfer into Japan and go through daily life of studying there. This about the same time when Orie also transfers to Japan. She attends an elite school with her attendants Murayama and Sakurai who also keeps an eye on her actions. [From Under Night in Birth Wikia.]