Cloud didn't remember him? Sure, they hadn't talked much, but it still caught him by surprise. Understanding started to dawn on him as he listened to his explanation.

"I'm not sure I fully understand. But that explains why you look younger. I'm Tidus, by the way. We fought on the same side." He was still glad to see him. He shrugged absently. "Apparently. So are you." It was still weird to think about in too much depth.