The Trap and Magic

I don't know exactly what it was, but there was a powerful magic trap in our way. I bet those caravans installed it here. I just walked into it blindly. My soldiers and I are all in pain... Do you have any idea what that's like? We have no wounds, but our bodies ache all over. Outros Sorcerers I consulted are completely at a loss. There's only one person who can solve this problem, and that would be Castor. Go to Magic Trainer Castor southeast of the village, and ask him about these symptoms.

Why are you so lazy? You're going to be in trouble once I recuperar. Go to Magic Trainer Castor southwest of the village and ask for help!

It's an emergency. I can see it on your face. Hmm... From his symptons, I can tell this is ancient magic. It's a spell. Of course, Koop's sorcerers can't solve it. But, who would have done such a thing? Sorcerers from the Human land are not likely to have done these things... I should research it some more. Do you know about this by chance?