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.
Wh-What are you talking about?
Wovon sprechen Sie da?
¿D-de qué habla?
Mais de quoi parlez-vous ?
D-Di cosa state parlando?
D-Do que você está falando?
О чём вы говорите?