Riku didn't have to do that! But it was nice. There wasn't much of him to wash, just his stomach and needing to rinse all the sweat from his body.
"It was more than perfect," Sora murmured, eyes sliding closed, a gentle smile spread across his face. "I feel so good." Just, blissful.
After a moment, Sora hesitated and spoke up again. "There was a time, you stopped, and...what was that?" When Riku cried out and was suddenly quite intense, saying it felt good. What, exactly?