Isaac
The first boy
to see Julius through the window of Orpheus is a poor but
extremely talented young pianist, who studies at the St.
Sebastian with a scholarship. Unluckily, Isaac doesn't perform in
his life's choices the same talent he shows in playing piano:
he's an introvert, shy, irresolute person, and his choices will
almost always turn against him. Declaring his love for Julius
only when she's irremediably compromised with Klaus, he loses her
forever. After that, he receives a bunch of favourable proposals,
but he stupidly rejects them. His sense of honour makes him marry
a wanton prostitute, Roberta, who will disappoint him deeply and
eventually ruin him. Furthermore, Isaac's senseless use of a
doubly heavy hammer while playing piano lead his fingers to lose
sensibility and he has to give up his prodigious career as a
pianist.