He nods a few times but isn't sure how to answer the other questions.

"Um...I don't know. It's just there." Though now, since he's thinking about it, his smile fades. His most recent memory of the water isn't a good one, as it's connected to the last time he ever saw Karoku.

"But the water Karoku gave me wasn't salty." Granted he only learned what salt and 'salty' even were when he joined up with his now-friends.