A phrase "Family honor" serves as the best reason.
If Duke Touss had died honorably on the battlefield, they would have accepted it. But to die so obscurely while observing the battle, this explanation doesn't hold water.
The outside world doesn't believe it, and they believe it even less. Whether or not it was the Royal Family's doing is uncertain, but the suspicion falls on Alpha the First, and so they must demand an explanation from the Royal Family.
The members of the Alsad Family cannot die in vain!
After sending off the elders of the clan, the tears in Rudy's eyes disappeared in an instant. He turned directly into a quiet room, pressed a hidden button, and a secret passage appeared before him.
...
"Father, the task you entrusted to me, I have completed it.
However, the resentment within the family is still quite large, and many people oppose deepening the conflict, advocating for compromise with the Royal Family!
..."
