What's normal really, Kyoko? Tidus's mask doesn't do well with raised brows, going as high as his forehead, but his small laugh will probably do the trick.

"What? No," that's ridiculous and weird, "I was just guarding someone who was going to take down a big creepy monster. I learnt it on the way."

Which isn't the way he'd want to usually bring up Sin, but that's the way it slides out, somehow. No need to always get too personal about it, right?

"It wouldn't make any sense if I tried describing it. It's something about energy, focus..." Pausing for a long moment, and giving up and waving his free arm in a shrug. "I dunno. Maybe even you could do it."