Isumi: All thanks to the Waya medicine.
Zelda: Waya medicine?
Isumi: I gave him some medicine when he got a stomach ache. Remember? The kind you always take when you have one. I figured since he looks just like you, the medicine would work on him, too.
Zelda: That makes no sense!
Isumi: Anyway, it worked like a charm, and we became good friends.