A Minami plot was behind the massive wyvern attack on Saphir.  To stop the plot, Nyanta attacks the train carrying the Minami general alone.  But he's faced with the sorcerer he defeated long ago, the man who trapped Serara in the far north, Londark.
Yes.
Genau. Shiros Lehren
wurden zu seinem Schwert.
Sí.
Une lame forgée
par l’enseignement de Shiroe.
Sì.
Sim.
Да... Клинок этого мальчика —
это наставления господина Сироэ.