Riku tried to move closer, as though he could shield the Prince from the future hurt with his own body. To him, the Prince's heart, and his will, were incredibly strong.
"Yes," of course Riku understood phantom pains. His shoulder did that, sometimes. He tried not to bother the Prince with it, thought Sora always seemed to know what it was bothering him. "But... wounds have origins. A stab, a break, a fall, a point of injury. I don't," his language was slipping in his distress to help his love, "Understand how your wound came about."
He reached up and gently moved the Prince's hair aside so that he could see his eyes. "I just want you let me know, if there's anything I can do. I worry about you."