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.
Iselus, if you think it's that easy to 
become friends with the adventurers,
Itherus,
Icelus, si crees que es tan fácil 
ser amigo de los Aventureros,
Icelus…
Iselus, se credi che sia così facile farseli amici,
Iselus, se acha que é fácil 
ser amigo de Aventureiro,
Исельс!