C189 Traces and Clues

But family discipline is good, there's absolutely no naughty kid like this throwing pebbles around.

After all, the cobblestone was so heavy, If they were thrown around randomly, people might get injured. How could there be a devilish child who randomly threw these pebbles around?

Moreover, there were so many of them. If there really was such a devilish brat throwing pebbles around