Satoka is asked by a girl to help her search for an item she dropped, but Satoka is instead confused by the girl's odd behavior. That night, Altair Torte decides to preform a more hand-on training in fifth dimensional space. They start running with their equipment on, but suddenly a girl clad in a black costume attacks them! She calls herself the Knight of the Black Swan, Odile, but what is this girl really after?!