Did Gustav surprise them? Why? Did they expect him to hate his father so much that he would take every opportunity to destroy him? Did his own family think of him that way?
That's fine, let them think that way. He doesn't care what others say, even if they are his closest relatives. Even if it's Ursula, who, despite being only a few years older than him, cared for him like a mother. At least when they were children. So let them think whatever is convenient about him....
It hurt. For some reason, his heart was pierced by pain. After all, they were family. Ursula had always treated him so well. Why did she think he would take pleasure in stabbing his father in the back? Was it because his father had stabbed him in the back?
"Uncle, forgive me, but I'm tired," Gustav stood up. "I'm sorry I can't support you... Not for such reasons..."