There was a carpet of fallen leaves that stretched out around us.
I picked up some fallen leaves and made tempura with them.
"Look, when it started I was just trying to be nice to Fugu because he was my big sister’s boyfriend. Then, one thing led to another and before I knew it, we were... raking fallen leaves together." "T-Tuna. Why would you do that?" "Salmon, wait. We only did it once. It didn’t mean anything to me."
The leaf that falls are fallen leaves.
The reading for this one is a bit strange. You'll have to pull from your knowledge of 落ちる and use that for the first half. Then, 葉 is rendaku'd to ば. Because, when a leaf falls, Scrooge says "BAH! Humbug!" (probably because he's losing money).