Aria didn't immediately say yes to confirm the merchant's question, because she was angry at Swan who was still alive even though she was supposed to die by the time she left the palace gate.
Not only did she not die yet, but she also dared to work side by side with the Beast King! Did that cripple not know her place?!
"Your Highness? You're indeed the only Princess our country has, right?" The merchant repeated his question since he didn't get an answer before, and Aria resumed her amicable smile.
"Of course, I am the only one," Aria confirmed. "Though, just to be sure, was it really the Beast King who said that?"
"Yes, Your Highness. The Beast King seems to be very proud of his little wife. I assume she is supposed to replace you, right? I heard that rumor before," the merchant said.