When my name was Keoko questions chapter 17 and 18

What did the Japanese feared?

The Japanese feared of one thing. The Japanese feared that the Americans will fight back Japan and fight to Korea. And so they practiced the students to fight back the soldiers with sticks and rocks.

What message was on the leaflets?

The message was from the Americans. The Americans said on the leaflets that they knew that Koreans are different from Japanese and they said not to be worry they won't attack the Koreans.