Sasha

"I won't deny I am one of the causes of it, but the situation was inevitable. 

But you! You should have been able to protect her if not because of your so-called righteousness and morality!"

"How does my morality relate to this? If she asks me for help, I will never turn her down! You are the scum here. Did one of your rivals poison her?"

"Poison her? My rival? Yes, you're right! It's your father who did this."

William, who listened from the side, raised his eyebrows at the revelation. Sasha was a princess, meaning she was one of the King's daughters. 

Even though she was born from a concubine and, based on Feraldian culture, doesn't have the daughter status, it doesn't change the fact that she was the King's biological daughter.

"How cruel. To do this to his own daughter," William mumbled.

Roxy, at his side, also said, "If every parent is like this, I feel fortunate not having one, young master."