Corin laughed when Namine did. He supposed it was kind of ironic.... crow, a black colored bird, when he had fair, pale hair.
He took a moment to think. This wasn't something he could just decide without thought. If he accepted that Namine was his little sister, then he would stop looking. He'd stop wondering what happened to her.
He let go of Namine's hand and placed them both on the side of her face, looking at her. "I accept," he said softly, "And hope you will accept me as the eldest brother you lost so many years ago."
Of course the Prince was right. Could could know Riku's feelings better than his almost-fiance?
"You really think he's my brother?" Riku asked. The Prince didn't really sound torn on it. "I don't even know where to start."