@Ding Ding your question confused me. But I'll summarize what I think you're asking about. So the crown prince is the emperor and empress's son, rubelian is the emperor and past Duchess of Florence son but he doesn't see the emperor as his father because he raped his mother and instead sees the past Duke of Florence as his father, the crown prince is his half brother (and this is just speculation) and he wants to fix the gap between him and rubelian (idk if this was what you were asking about I'm sorry