Isaac and the Black Sword Knights are responsible for training the Maihama army. While he's in Maihama Isaac gets to know the new crown prince of Maihama, a young boy named Iselus.  Iselus respect looks up to Isaac and respects him.
At a party for the crown prince's birthday, assassin's make an attempt on his life.
At my equipment level, I can't master 
an expensive sword like this.
No puedo dominar una espada tan 
cara con mi nivel de equipamiento.
Elle est hors de prix…
Al mio livello di equipaggiamento
 non posso padroneggiare una spada così costosa.
Não consigo dominar uma espada 
cara como esta no meu nível atual.
Такой дорогой меч…