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.
When you're worried, you get 
old man wrinkles right here.
Wenn du beunruhigt bist,
Cuando te preocupas, 
te salen arrugas de anciano.
Quand vous êtes tracassé,
Quando sei preoccupato,
 ti vengono le rughe di un vecchietto qui.
Quando você fica preocupado,
 aparece umas rugas aqui.
Когда ты переживаешь,