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.
but I want to stay with Nyanta and everyone else.
aber ich möchte auch
bei Nyanta und euch bleiben.
Mais en même temps, j’ai envie
de rester avec Nyanta et vous.
ma voglio anche rimanere 
con Nyanta e voialtri.
mas eu queria ficar aqui 
com Nyanta-san e os outros.
но не хочу бросать
дядю Мяуту и остальных.