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'm going to stay in this world for a while.
Ich werde nämlich noch eine
Weile in dieser Welt bleiben.
Me quedaré un buen tiempo en este mundo.
je vais rester dans ce monde
Rimarrò in questo mondo ancora un po'.
Vou ficar um tempo neste mundo.
Я погощу ещё немного