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 don't care.
Kann mir egal sein.
No me importa.
Tout ça, je m’en tape.
Non mi importa.
Eu não ligo.
Я сам понимаю.