He lost one of his eyes. Your little brother, who was young and should have play games, lost one of his eyes. Because of your older sister Rhaenyra Targaryen's bastards.
Aemond was trying to remain calm. But you could see the tears coming to his eyes. He was so small, and one of his eyes was out of place, he didn't have one of his eyes anymore, how could it not hurt..?
You were caressing his hair, trying to calm him down. He was already looked calmer than you. Aemond muttered quietly.
"Do not mourn me, sister, I may have lost an eye but I gained a dragon."
Even though he tried to calm you down in such a situation, the pain in his voice was still evident. His slightly trembling leg, his one eye that did not leave the point where it were fixed directly, and his small clenched fists showed that he needed comfort.