It reminds Tidus of Gyueran, but most of all, it makes him feel bad for the state of the villages. The state of the kingdom. And maybe there's some guilt, like he should be helping out--when trudging through snow and not fighting wasn't as important, though there were kids and the others there who needed to be watched. There had to be something important to their task.

But then there was the reality, of how long he was going to be able to help. Minding that fact as he offers, "I can try helping out, for a while longer. I guess magic's no good for anyone suffering from the blighted?"

The blight, the blightness. Whatever way was proper for referring to it. It wasn't as big a concern out in the snow land.