If there was one thing Ai could be thankful for, it was the fact that there were no real lingering physical effects. The idea of swimming like that forever hadn't been something he wanted to think about, let alone do. Though, he had to admit, it hadn't been all bad.
"Are you sure it's not fleas, Senpai?" He was teasing, and the smile said as much, but he gave a small nod after. "I think I'm mostly normal." He took a moment to look at his hand seriously before back up at Rin. "I think I feel stronger, though. Swimming then hadn't been as hard...and I think because I did it more, my stamina increased. Sousuke-kun would be proud."