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.
I thought you were more of a musclehead.
Et moi, je vous prenais
pour un tas de muscles sans cervelle.
Io credevo che tu fossi tutto muscoli
 e niente cervello.
E eu achei que você fosse 
um musculoso sem cérebro.
Я тоже ошибался, считая тебя
безмозглым силачом, Айзек.