Vivi and Nikolai are forced to fight Alberic , who does n't recognize his comrades .
Chaika , Toru , Vivi and Nikolai arrived in an arena watched over by Alina , Irina and Black Chaika , who orders them to fight certain opponents .
Vivi and Nikolai are forced to fight Alberic , who does n't recognize Toru 's comrades .
Chaika , Toru , Vivi and Nikolai arrived in an arena watched over by Alina , Irina and Black Chaika , who orders them to fight certain opponents .